# MPC Seminar 2018

## Spring 2018

The seminar talks are in Von Neumann Hall VN 116 (545 W Palm Ave corner of W Palm Ave and railroad, Orange, CA 92866). Sometimes there will be a change of venue and the announcement will reflect this change.

See [http://www.chapman.edu/discover/maps-directions/index.aspx Maps and directions], Von Neumann Hall is Building 48 on the Campus Map [https://www.chapman.edu/about/_files/maps-and-directions/current-maps/campus-map.pdf Campus map]

### Friday, May 11th at 3:00pm, Von Neumann Hall, tea and cookies at 2:30pm

Title: Consumer-centric Residential Demand Side Management

Abstract: Energy Management Systems (EMS) are mainly price driven with minimal consumer interaction. To improve the effectiveness of EMS in the context of demand response, an alternative EMS control framework driven by resident behavior patterns is developed. Using hidden Markov modeling techniques, the EMS detects consumer behavior from real-time aggregate consumption and a pre-built dictionary of reference models. These models capture variations in consumer habits as a function of daily living activity sequence. Following a training period, the system identifies the best fit model which is used to estimate the current state of the resident. When a request to activate a time-shiftable appliance is made, the control agent compares grid signals, user convenience constraints, and the current consumer state estimate to predict the likelihood that the future aggregate load exceeds a consumption threshold during the operating cycle of the requested device. Based on the outcome, the control agent initiates or defers the activation request. In an extension of this work, a battery health conscious stochastic dynamic programming control framework is introduced as part of a greater cyber physical system which incorporates the harvesting unit, the storage unit, the residential load profile, the weather, the weather forecast, the utility, and consumer preferences into a unified Markov decision process.

### IQS Live Podcast, Monday, April 16th at 6:00pm, 1888 Center, 115 North Orange Street

Title: What Is Real? The Unfinished Quest for the Meaning of Quantum Physics

Abstract: IQS Live podcast recording and book signing with Adam Becker, author of:

"What Is Real? The Unfinished Quest for the Meaning of Quantum Physics”

Monday April 16 6pm-8pm 1888 Center, 115 North Orange Street, Orange, CA 92866

Produced in partnership with the Institute for Quantum Studies, Chapman University

Organized by IQS. Free admission, but seating is limited so you have to RSVP at the following link: Event Registration

### Friday, April 13th at 3:30pm, Von Neumann Hall, tea and cookies at 3:00pm

#### Speaker: Dr. Jose Raul Gonzalez Alonso, Chapman University

Title: Quantum Chaos, Information Scrambling, and Out-of-time-ordered Correlators

Abstract: Out-of-time-ordered-correlators (OTOCs) have emerged as a useful tool to study quantum chaos and the scrambling and delocalization of information in many-body systems. While challenging, their experimental measurement has been achieved in NMR, trapped ion, and superconducting systems. In this talk, I will review the different open problems at the intersection of quantum chaos, information scrambling, and OTOCs and the recent progress in solving them.

### Friday, April 6th Sixth annual Computational and Data Sciences Graduate Conference

#### Speaker: Chapman University Graduate Students, 9:15am - 4:30pm, Argyros Forum 209ABC

Title: Sixth annual Computational and Data Sciences Graduate Conference

Abstract: Various

### Friday, March 30th at 3:00pm, Von Neumann Hall

#### Speaker: Kai-Wen Tu, Chapman University

Title: Fourier Transform and Signal Processing Application with a SAR Imaging Example

Abstract: In solving heat-flow problems Fourier found that a periodic function can be represented by an infinite series of sinusoidal functions. Generalization from Fourier Series to Fourier Transform and its discrete form, the Discrete Fourier Transform (DFT) will be discussed briefly. Development of a computationally efficient algorithm FFT (Fast Fourier Transform) for computing DFT will be described with MATLAB illustration. The second part of the talk will focus on a specific signal processing application using FFT. An overview of imaging radar systems with conventional aperture as well as with synthetic aperture (SAR) will be given. Image resolution will be shown to be related to pulse compression and synthetic array processing as the antenna beam creates a footprint with the continuing illumination of a designated spot. Image formation of the Spotlight imaging mode encompassing signal data collection, motion compensation, data sampling, range dechirp, azimuth compression, polar interpolation, 2-D FFT, phase correction, and pixel magnitude encoding will be presented.

### Tuesday, March 20th at 3:00pm, Von Neumann Hall

#### Speaker: Mic Detlefsen, University of Notre Dame

Title: Some Elements of Hilbert’s Formalism

Abstract: The aim of this talk is to describe and consider the significance of a certain element of Hilbert¹s formalist viewpoint that I call its descriptive or observational element. This element played an important role in shaping Hilbert¹s distinctive approach to the consistency problem for arithmetic (and to other consistency problems). It seems not to have been generally well recognized and appreciated.

### Friday, March 16th at 3:00pm, Von Neumann Hall

#### Speaker: Lorenzo Catani, UCL

Title: Csirelson’s bounds as a refinement of Landauer’s principle

Abstract: I will present a simple single qudit protocol that computes a non-linear function. It consists of a system in a fixed state, two gates controlled by classical dits (d-level systems) and a fixed measurement. The goal is to choose gates to optimise the average probability over all input combinations of dits to obtain the target non-linear function as output.

I will show that any strategy in the single-qudit protocol can be mapped to a strategy in a two qudits CHSH game, thus obtaining the known classical Bell bounds for the strategies that only involve classical reversible computation or quantum stabiliser computation, and Csirelson’s bounds for general quantum strategies. Since the single qudit protocol restricts the degrees of freedom to gates only, we analyse the bounds obtained in light of Landauer’s principle, showing that there is a trade-off in entropic cost versus increased success probability. The single qubit computation can perform better than the reversible bit computation, but it cannot achieve the performance of the irreversible computation. In this sense the protocol acts as an irreversibility witness. In the case of systems of dimension two (bits and qubits) these results have a clear geometric interpretation in the corresponding state spaces.

I will briefly discuss how our scheme also acts as a dimensional witness and I will conclude with some comments on the sources of non-classicality present in the current protocol since non-locality and contextuality (in its standard notions) are not present.

### Friday, March 9th at 3:00pm, Von Neumann Hall

#### Speaker: Dr. Carey Caginalp, University of Pittsburgh

Title: Supply, Demand, Volatility and Fat Tails

Abstract: The classical equations of mathematical finance involve basic assumptions that are convenient mathematically and are essentially a particular limit of the underlying market phenomena. The assumptions involve infinite capital for arbitrage and independent Gaussian increments in relative price change. Among the consequences are an exponential decay in large deviations of relative price and volatility that is essentially constant in time. We use a basic supply/demand model to explain the fat tails phenomena based on endogenous reasons. The bubble in cryptocurrencies can also be explained in terms of this approach in which the liquidity price, namely, cash available for investing in a particular asset divided by the number of units available. Current work is focused on demonstrating that the extrema in price are accompanied by extrema in volatility. (Research in collaboration with Dr. Carey Caginalp)

### IQS Workshop: Saturday, March 3rd, Argyros Forum 212

#### Speaker: Quantum Simulation and Quantum Walks Workshop

Title: Quantum Simulation and Quantum Walks Workshop

### IQS Workshop: Thursday-Friday, March 1st and 2nd, Beckman Hall 404

#### Speaker: AAV Anniversary Conference - Celebrating 30 Years of Weak Values

Title: AAV Anniversary Conference - Celebrating 30 Years of Weak Values

### Friday, February 23rd at 3:00pm, Von Neumann Hall

#### Speaker: Dr. Ken Wharton, San Jose State

Title: Spacetime-Based Retrocausal Models

Abstract: Ordinary quantum states grow exponentially with particle number, and cannot exist as a function on ordinary spacetime. But when retrocausal models are considered, the reason for this exponential growth disappears, raising the exciting prospect of some ontic description of quantum phenomena that does exist in spacetime. (In such models the spacetime-based ontic parameters need only work for the actual future measurement setting, not all possible counterfactual settings.) I will give a detailed example of such a model, which can properly account for all maximally-entangled two-qubit states. The key is an "all at once" analysis of the histories, rather than a dynamical evolution of instantaneous states. Intriguingly, the model naturally supplies a novel alternate interpretation of Weak Values.

### Thursday, February 22nd at 4:00pm, Von Neumann Hall

#### Speaker: Adam Becker, Science Writer

Title: Myths about the history of the de Broglie-Bohm interpretation: setting the record straight

Abstract: Misconceptions about the de Broglie-Bohm interpretation of quantum mechanics appeared immediately at its first public presentation by de Broglie at Solvay in 1927. It took many years for those misconceptions to fall away. Today, we finally have a good understanding of the theory (or at least a better understanding), but there are still many common misconceptions about its history. What were the nature of the objections to de Broglie's version of the interpretation at Solvay? Why did de Broglie abandon it? What prompted Bohm to look for a new interpretation 25 years later? How were Bohm's ideas received by his contemporaries? And why did Bohm himself ultimately abandon his own ideas for another quarter of a century? There are "standard" answers to these questions, most of which are simply myths. For example, Pauli did not stump de Broglie at Solvay, Oppenheimer was generally kind to Bohm during his time on the blacklist, and Bohm's ideas were not simply ignored or dismissed out of hand by his contemporaries. In my talk, I will discuss the origins of these myths, and the far more complicated and surprising historical truths that they obscure.

### Friday, February 16th at 3:00pm, Von Neumann Hall

#### Speaker: Eli Levenson-Falk, USC

Title: Fleas on Schrödinger's Cat: Quasiparticles in Superconducting Quantum Circuits

Abstract: Superconducting electrical circuits can be used for quantum computing, quantum simulation, ultra-low-noise amplification, and precision sensing. However, quasiparticles--electron-like single-particle excitations of the superconducting condensate--can cause loss and noise, limiting the performance of these devices. The generation mechanisms, behavior, and annihilation channels of these quasiparticles are still poorly understood, hindering efforts to eliminate them from circuits. I will review the evidence for different quasiparticle models, show measurements using Andreev bound states as quasiparticle traps, and discuss future experiments that will determine the best ways to mitigate the harmful effects of quasiparticles.

### Friday, February 9th at 4:00pm, Beckman Hall 105

#### Speaker: Dr. J.H. Eberly, Department of Physics and Astronomy, Center for Coherence and Quantum Optics, University of Rochester

Title: Hidden Coherences and Complementarity

Abstract: Interference, duality, polarization, coherence and entanglement are a partial list of notions that belong to both quantum physics and classical optics. It has been our recent goal to bring quantum-classical links into wider view and to indicate directions in which forthcoming and future work may be able to promote discussion and lead to a more unified understanding. A starting point has often been Niels Bohr's pronouncements and explanations of complementarity, as a way to come to grips with de Broglie's duality. Related debates have engaged and challenged philosophers as well as physicists for almost a century. Complemenn-classical world's mysterious quantum features. Disputed analyses and unresolved conflicts are still debated. It seems to have escaped notice that a key element in Bohr's own defining summary has never been captured in assessments to date. We will report what we believe to be the first description of complementarity that is quantitatively complete, along with experimental evidence of completeness.

### Friday, February 9th, at 2:00pm in Hashinger 150 (Irvine Lecture Hall)

#### Speaker: Dr. Cumrun Vafa, Harvard University

Title: Fundamental Lessons From String Theory

Abstract: String theory has been developed for more than 40 years now but it seems that we are still far from its final formulation. Nevertheless, I explain some of the highlights of what we have learned from string theory and how it revolutionizes many of the fundamental principles of physics.

### Thursday, February 8th, at 7:00pm in Beckman Hall 404

#### Speaker: Dr. Cumrun Vafa, Harvard University

Title: Physics and Geometry

Abstract: This talk reviews the deep historical connections between geometry and physics. In modern times, the extra dimensions of string theory has provided a new opportunity for enhancing this interplay which will be illustrated by concrete examples.

### Monday, February 5th at 4:00pm, Von Neumann Hall

#### Speaker: Dr. Ales Pultr, Charles University, Prague

Title: Point-free topology and some of its merits

Abstract: Point-free thinking, example. Points vs. (realistic) places. A glimpse of history: Synthetic and analytic geometry; classical topology as a generalized geometry is the analytic version of such a generalization. De- velopment starting in late 30ties and 40ties, how the point-free ideas connect with the classical ones (Hausdorff, Kuratowski, Caratheodory, Freudenthal). The break in the late fifties. Definition of a locale (frame). Basic concepts and how one works with them. One obtains a broader range of spaces and every generalization calls for justification. This will be done by discussing the following legitimate ques- tions. (1) Is the broader range of spaces desirable? Do we get in some sense a better theory and when? (2) Is the algebraic technique appropriate, does it not obscure the geomet- ric content? (3) Do we not lose to much information when abolishing points? We will start by briefly answering question (3) and then go to (1) and (2) presenting examples of results that are nicer, or cannot hold in the classical context at all. In particular we will emphasize the constructive aspects (facts working without choice principles, such as compactification, completion, or Stone duality - the last is so simple that it can serve also as an example of the advantage of the algebraic techniques). Note of the role of point-free topology in logic and theoretical computer science.

### Monday, January 29th at 3:00pm, Von Neumann Hall, third session of the OCIE-HPML seminar

#### Speaker: Dr. Jamie Tappenden (USC)

Title: Frege, Carl Snell and Romanticism; Fruitful Concepts and the 'Organic/Mechanical' Distinction

Abstract: A surprisingly neglected figure in Frege scholarship is the man Frege describes (with praise that is very rare for Frege) as his "revered teacher", the Jena physics and mathematics professor Carl Snell. It turns out that there is more of interest to say about Snell than can fit into one talk, so I'll restrict attention here to just this aspect of his thought: the role of the concept of "organic", and a contrast with "mechanical". Snell turns out to have been a philosophical Romantic, influenced by Schelling and Goethe, and Kant's Critique of Judgement. In Frege's environment, the "organic/mechanical" contrast, understood in a distinctively Romantic fashion, had reached the status of "accepted, recognized cliché". More generally, Frege's environment was more saturated with what we now call Continental philosophy" than we might expect. This context-setting has a payoff for our reading of Frege's texts: many expressions and turns of phrase in Frege that have been regarded as vague, throwaway metaphors turn out to be literal references to ideas that would have been salient among the people in Frege spent time with day-to-day. In particular, this is true of Frege's account of "extending knowledge" via "fruitful concepts" and his rejection of the idea that logic and mathematics can be done "mechanically" (as with Jevons' logic machines, or Fischer's "aggregative mechanical thought"). When Frege appealed to "organic connection" and speaks of fruitful concepts as containing conclusions "like a plant in its seeds", he would have expected his apparent metaphors to have been understood in a very specific way, as alluding to a recognized contrast between "organic" and "mechanical" connection that was applied by Snell and those close to him not only to distinctions between biological and physical reasoning but also to distinctions of types of reasoning in arithmetic and geometry.

### Monday, January 29th at 4:00pm (Beckman Hall 404)

#### Speaker: Peter Coffee, Vice President for Strategic Research at salesforce.com

Title: The Future That's Already Happened: Fundamental Forces of Change

Abstract: There are two ways to talk about "the future." One involves making predictions of what might happen. The other, much less speculative, solves present-day equations for a future value of time. Today, the second approach can make use of observable facts about connection, collaboration, acceleration, and introduction of machine intelligence ("Ex Machination") into devices and processes -- to give us a crisp and compelling picture of what otherwise might seem wild-eyed visions.