Remote entanglement by measurement of spin qubits via longitudinal (curvature) couplings to a superconducting resonator
ORAL
Abstract
Remote entanglement of spin qubits is an important resource for quantum communications, and quantum simulations. Based on our previous proposals [1,2] we study the feasibility of remote entanglement of spin qubits via joint continuous measurement by a superconducting resonator using longitudinal (curvature) couplings. As examples, we consider (i) double quantum dot (DQD) Singlet-Triplet qubits at the charge degeneracy point and (ii) DQD charge qubits with magnetic field gradient, both relevant to current experiments. The effects of charge dephasing and T1 (Purcell) relaxation as well as effects of measurement asymmetry and local qubit rotations on the entanglement fidelity are considered.
[1] R. Ruskov, A.N. Korotkov, Phys. Rev. B 67, 241305(R) (2003); R. Ruskov, A.N. Korotkov, and A. Mizel, Phys. Rev. B 73, 085317 (2006)
[2] R. Ruskov and C. Tahan, Phys. Rev. B 99, 245306 (2019); arXiv: 1704.05876
[1] R. Ruskov, A.N. Korotkov, Phys. Rev. B 67, 241305(R) (2003); R. Ruskov, A.N. Korotkov, and A. Mizel, Phys. Rev. B 73, 085317 (2006)
[2] R. Ruskov and C. Tahan, Phys. Rev. B 99, 245306 (2019); arXiv: 1704.05876
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Presenters
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Rusko Ruskov
Laboratory for Physical Sciences, College Park, MD 20740,USA
Authors
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Rusko Ruskov
Laboratory for Physical Sciences, College Park, MD 20740,USA
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Charles Tahan
Laboratory for Physical Sciences, College Park, MD 20740,USA, Laboratory for Physical Science