Bulletin of the American Physical Society
Joint Fall 2012 Meeting of the APS New England Section and the AAPT
Volume 57, Number 15
Friday–Saturday, November 9–10, 2012; Williamtown, Massachusetts
Session A1: Quantum Information |
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Chair: Frederick Strauch, Williams College Room: Wege Auditorium |
Friday, November 9, 2012 1:00PM - 2:00PM |
A1.00001: Building blocks for a scalable quantum computer Invited Speaker: Paola Cappellaro Quantum control of radiation-matter interactions at the nano-scale could yield significant improvements in fields ranging from atomic physics to magnetic resonance and chemistry. The most prominent application would be quantum computation. Although small quantum systems can be manipulated with high precision, there is still no clear path to build scalable quantum devices. We address this challenge with a bottom-up approach, where small quantum registers are assembled in a larger modular architecture. After briefly describing an implementation of quantum registers based on Nitrogen-Vacancy centers in diamond, in this talk I will focus on a key element of this proposal, quantum spin wires that connect the registers and transmit information among them. I will present recent results on quantum information transport in spin wire networks, in particular protocols that permit perfect transfer in far more relaxed conditions that previously thought, thus opening the possibility of a practical implementation. I will then show the first experimental study of these quantum information transport protocols in a unique, quasi-1D solid-state spin system. These results can be extended to other physical implementations and pave the way toward a scalable quantum computer. [Preview Abstract] |
Friday, November 9, 2012 2:00PM - 3:00PM |
A1.00002: Quantum Optics with Superconducting Circuits: From Single Photons to Schrodinger Cats Invited Speaker: Robert Schoelkopf Over the last decade and a half, superconducting circuits have advanced to the point where we can generate and detect highly-entangled states, and perform universal quantum gates. Meanwhile, the coherence properties of these systems have improved more than 10,000-fold. I will describe recent experiments, such as the latest advance in coherence using a three-dimensional implementation of qubits interacting with microwave cavities, called ``3D circuit QED." The control and strong interactions possible in superconducting circuits make it possible to generate non-classical states of light, including large superpositions known as ``Schrodinger cat" states. This field has many interesting prospects both for applications in quantum information processing, and fundamental investigations of the boundary between the macroscopic classical world and the microscopic world of the quantum. [Preview Abstract] |
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