Applied Research Laboratories researchers, Dr. Granville Ott (left), Dr.
Brian La Cour (center) and student Michael Starkey (right) beside their prototype quantum
News from the Center for Quantum Research
Local Hidden-Variable Model of Quantum Nonlocality. This letter describes a local hidden-variable model capable of reproducing the results of a recent experimental test of both quantum nonlocality and
contextuality. [“Local Hidden-Variable Model for a Recent Experimental Test of Quantum Nonlocality and Local Contextuality.” Physics Letters A, vol. 381, 2230 (2017)]
Austin Meetup. Brian La Cour will be presenting as a special guest at the
Austin Quantum Computing-Artificial Intelligence Meetup on 21 March 2017 at 6:30 pm in the Windsor Park Branch of the Austin Public Library. The meeting is open to the public.
APS March Meeting 2017. Brian La Cour, James Troupe, and Corey Ostrove will be presenting at the 2017 APS March Meeting in New Orleans, Louisiana. Brian will present on
Quantum error correction in classical analog devices, James will present on BB84 with weak measurements, greater security with fewer assumptions, and Corey will present on Using quantum process tomography to characterize decoherence in an analog electronic device.
Subspace projection method for unstructured searches. This paper describes a novel approach to solving unstructured search problems using a classical, signal-based emulation of a quantum computer. [“ Subspace projection method for unstructured searches with noisy quantum oracles using a signal-based quantum emulation device.” Quantum Information Processing, vol. 16, 7 (2017).]
Classical simulated annealing using quantum analogues. This paper describes the use of certain classical analogues to quantum tunneling behavior to improve the performance of simulated annealing on a discrete spin system of the general Ising form. [“ Classical simulated annealing using quantum analogues,” Journal of Statistical Physics, vol. 164, 772 (2016).]
Austin Meetup. Brian La Cour will be presenting as a special guest at the Austin Quantum Computing-Artificial Intelligence Meetup to discuss the IBM Quantum Experience. The meeting will be on 7 July 2016 at 7 pm in the Windsor Park Branch of the Austin Public Library and is open to the public.
Adiabatic Quantum Computing conference. Brian La Cour will be presenting on “Classical simulated annealing using quantum analogues” at the Adiabatic Quantum Computing Conference, 27-30 June 2016 at Google Los Angeles.
Quantum and Beyond. Brian La Cour will be presenting on “Decoherence: It’s not just for quantum anymore” at Quantum and Beyond, The 17th Vaxjo Conference on Quantum Foundations, 13-16 June 2016 at Linnaeus University, Vaxjo, Sweden.
A local hidden-variable model for experimental tests of the GHZ puzzle. This paper describes a local hidden-variable model that is capable of producing the experimental results of recent tests of quantum nonlocality using Greenberger-Horne-Zeilinger (GHZ) states. [“ A local hidden-variable model for experimental tests of the GHZ puzzle.” Quantum Studies: Mathematics and Foundations, vol. 3, 221 (2016).]
Classical emulation of a quantum computer. We describe the construction of a two-qubit quantum emulation device and benchmark gate fidelity for a programmable hardware prototype. [“ Classical emulation of a quantum computer.” International Journal of Quantum Information, vol. 14, 1640004 (2016)]
Austin Meetup. Brian La Cour will be presenting as a special guest at the Austin Quantum Computing-Artificial Intelligence Meetup on 29 March 2016 at 7 pm in the Carver Branch of the Austin Public Library. The meeting is open to the public. APS March Meeting. Brian La Cour and James Troupe will be presenting at the 2016 APS March Meeting in Baltimore, Maryland. Brian will present on Classical Emulation of a Two-Qubit Quantum Computer with Analog Electronics and James will present on A Contextuality Based Quantum Key Distribution Protocol.
Texas Section APS Conference. Brian La Cour, Corey Ostrove, and Michael Starkey will be presenting on 31 October 2015 at Baylor University in Waco, Texas. Brian will present on A local hidden variable model of GHZ puzzle, Corey will discuss Hybrid quantum-classical approaches to NP-complete problems, and Michael will describe our work on a Classical emulation of a 2-qubit quantum computer using analog voltage signals.
Classical model of entanglement. We describe how one can classically mimic the experimental measurements of an entanglement witness for polarization-entangled photons. [" Classical model for measurements of an entanglement witness." Physical Review A, vol. 92, 032302 (2015)]
Guest lecturer Dr. Chris Fuchs. Learn about QBism from one of the world's experts! Dr. Fuchs will speak Aug. 11th at 12:30 PM in RLM 11.204 on "Quantum Theory from Quantum Information? (What would Feynman say?)" He will give an encore lecture Aug. 12th at 10:00 am in the ARL Auditorium on "A New Alphabet for Quantum Information."
Feature Article in Phys.org on Quantum Emulation. We would like to thank Lisa Zyga, staff writer for Phys.org, for providing an excellent feature article on " Quantum computer emulated by a classical system."
Emulating Quantum Computers Classically. We present a scheme for realizing a classical analog electronic device that behaves just like a gate-based quantum computer. [" Signal-based classical emulation of a universal quantum computer." New Journal of Physics, vol. 17, 053017 (2015).]
Classical model of quantum measurement. This paper shows that one can obtain quantum-like behavior classically by considering only amplitude threshold detections. [" A locally deterministic, detector-based model of quantum measurement." Foundations of Physics, vol. 44, 1059 (2014).]
Mission of the Center for Quantum Research
The ARL:UT Center for Quantum Research (CQR) seeks to develop a deeper
understanding of quantum phenomena and how it differs from the classical
world. Quantum physics offers a rich variety of novel applications that
are only now beginning to emerge. These include powerful new quantum
computing methods, secure quantum communication networks, and precision
quantum sensing. Through basic, theoretical, and applied research, CQR
seeks to develop these emerging technologies as well as those yet to be