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14 September 2020 – 17 September 2020 OSA Virtual Event - Eastern Daylight Time (UTC - 04:00)

Computing and Simulation IV (QTh6A)

Presider: Brian Smith

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15:45 - 16:00
(UTC - 04:00)

Loss Tolerant Quantum State Tomography by Measuring Wigner Function Overlap (QTh6A.5)
Presenter: Miller Eaton, University of Virginia

We experimentally demonstrate quantum tomography of a single-photon state, with no assumptions or approximations, by measuring its Wigner function overlap with coherent states. The method is robust to noise and compensates for known loss.

Authors:Miller Eaton, University of Virginia / Rajveer Nehra, University of Virginia / Carlos Gonzalez-Arciniegas, University of Virginia / Myungshik Kim, Imperial College London / Olivier Pfister, University of Virginia

  Paper

16:00 - 16:15
(UTC - 04:00)

Robust High-Fidelity Two-Qubit Gates Using Pulsed Dynamical Decoupling (QTh6A.6)
Presenter: Patrick Barthel, University of Siegen

We experimentally characterize a two-qubit phase gate on radio frequency driven trapped-ion qubits generated by applying pulsed dynamical decoupling to each qubit’s carrier resonance. Robustness to pulse errors and ion temperature is shown.

Authors:Patrick Barthel, University of Siegen / Jorge Casanova, University of the Basque Country UPV/EHU / Patrick Huber, University of Siegen / Theeraphot Sriarunothai, University of Siegen / Martin Plenio, Ulm University / Christof Wunderlich, University of Siegen

  Paper

16:15 - 16:30
(UTC - 04:00)

Coherent Optical and Spin Dynamics of Single 171Yb Ions Embedded In a Nanophotonic Cavity (QTh6A.7)
Presenter: Andrei Ruskuc, California Institute of Technology

We demonstrate coherent optical and spin control of single 171Yb ions in YVO4 nanophotonic resonators as a platform for quantum network nodes with spin-CPMG and optical-Ramsey coherence times of 33 ms and 390 ns respectively.

Authors:Andrei Ruskuc, California Institute of Technology / Jonathan Kindem, California Institute of Technology / John Bartholomew, California Institute of Technology / Jake Rochman, California Institute of Technology / Yan Qi Huan, California Institute of Technology / Andrei Faraon, California Institute of Technology

  Paper

16:30 - 16:45
(UTC - 04:00)

Entanglement-Enhanced Physical-Layer Classifier Using Supervised Machine Learning (QTh6A.8)
Presenter: Quntao Zhuang, University of Arizona

We introduce physical-layer classifiers enhanced by multipartite entanglement learned through a support-vector machine. The required entangled states are practical and give error probability advantage over classical schemes in presence of loss.

Authors:Quntao Zhuang, University of Arizona / Zheshen Zhang, University of Arizona

16:30 - 16:45
(UTC - 04:00)

Entanglement-Enhanced Physical-Layer Classifier Using Supervised Machine Learning (QTh6A.8)
Presenter: Quntao Zhuang, University of Arizona

We introduce physical-layer classifiers enhanced by multipartite entanglement learned through a support-vector machine. The required entangled states are practical and give error probability advantage over classical schemes in presence of loss.

Authors:Quntao Zhuang, University of Arizona / Zheshen Zhang, University of Arizona

  Paper

16:45 - 16:45
(UTC - 04:00)

(Withdrawn) Photonic-Bound-State-Enabled Two-photon Quantum Logic Gate For All-Optical Quantum Information Processing (QTh6A.4)
Presenter: Zihao Chen, Washington University in St. Louis

We propose a novel two-photon quantum logic gate scheme by exploiting formations of photonic bound state. Our proposal is deterministic, faithful, and readily feasible, which provides the missing link for all-optical quantum information processing.

Authors:Zihao Chen, Washington University in St. Louis / Yao Zhou, Washington University in St. Louis / Jung-Tsung Shen, Washington University in St. Louis

16:45 - 16:45
(UTC - 04:00)

Multi-Ion Quantum Logic Driven by Integrated Optics (QTh6A.3)
Presenter: Maciej Malinowski, ETH Zurich

We use trap-integrated optics to drive 2-qubit quantum gate, generating Bell-states with fidelities 99.3(2)%. Integration simultaneously brings robustness and parallelizability to trapped-ion control, of interest for large-scale quantum computing.

Authors:Chi Zhang, ETH Zurich / Karan Mehta, ETH Zurich / Maciej Malinowski, ETH Zurich / Thanh Long Nguyen, ETH Zurich / Martin Stadler, ETH Zurich / Jonathan Home, ETH Zurich