Robustness of quantum gates with hybrid spin-photon qubits in superconducting resonators

被引：9

作者：

Chiesa, A. ^{[1
]}

Gerace, D. ^{[2
]}

Troiani, F. ^{[3
]}

Amoretti, G. ^{[1
]}

Santini, P. ^{[1
]}

Carretta, S. ^{[1
]}

机构：

[1] Univ Parma, Dipartimento Fis & Sci Terra, I-43124 Parma, Italy

[2] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy

[3] CNR, Ist Nanosci S3, I-41100 Modena, Italy

来源：

PHYSICAL REVIEW A | 2014年 / 89卷 / 05期

关键词：

CIRCUITS; ELECTRODYNAMICS; COMPUTATION; SYSTEMS;

D O I：

10.1103/PhysRevA.89.052308

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss a scalable scheme for the implementation of quantum-information processing in qubits formed by superconducting resonators and spin ensembles. The scheme is based on a hybrid dual-rail encoding, which allows one to perform both single- and two-qubit gates by shifting the resonator frequency. We estimate the quantum-gate fidelity by simulating the driven dynamics through a master-equation approach. High values of the fidelity can be achieved also in the presence of the main decoherence sources, namely, cavity-photon loss, and pure dephasing of the superconductive elements that are involved in the two-qubit gates. This result allows envisioning the scalability of such elements to a quantum-computing architecture made of an array of hybrid spin-photon qubits. Analogous results are obtained for a simpler, nonscalable setup, which we propose here in order to simplify the realization of the first proof-of-principle experiments.

引用

页数：9

共 47 条

[1] Quantum Information Processing with Hybrid Spin-Photon Qubit Encoding [J].

Carretta, S. ;

Chiesa, A. ;

Troiani, F. ;

Gerace, D. ;

Amoretti, G. ;

Santini, P. .

PHYSICAL REVIEW LETTERS, 2013, 111 (11)

[2]

Chuang I. N., 2000, Quantum Computation and Quantum Information

[3] Superconducting quantum bits [J].

Clarke, John ;

Wilhelm, Frank K. .

NATURE, 2008, 453 (7198) :1031-1042

[4] Implementing Qubits with Superconducting Integrated Circuits [J].

Devoret, Michel H. ;

Martinis, John M. .

QUANTUM INFORMATION PROCESSING, 2004, 3 (1-5) :163-203

[5] Strongly coupling a cavity to inhomogeneous ensembles of emitters: Potential for long-lived solid-state quantum memories [J].

Diniz, I. ;

Portolan, S. ;

Ferreira, R. ;

Gerard, J. M. ;

Bertet, P. ;

Auffeves, A. .

PHYSICAL REVIEW A, 2011, 84 (06)

[6]

Gatteschi D, 2006, MESOSCOPIC PHYS NANO, P1

[7] Coherent Spin Control by Electrical Manipulation of the Magnetic Anisotropy [J].

George, Richard E. ;

Edwards, James P. ;

Ardavan, Arzhang .

PHYSICAL REVIEW LETTERS, 2013, 110 (02)

[8] Resonant quantum gates in circuit quantum electrodynamics [J].

Haack, G. ;

Helmer, F. ;

Mariantoni, M. ;

Marquardt, F. ;

Solano, E. .

PHYSICAL REVIEW B, 2010, 82 (02)

[9] Magnetic field tuning of coplanar waveguide resonators [J].

Healey, J. E. ;

Lindstrom, T. ;

Colclough, M. S. ;

Muirhead, C. M. ;

Tzalenchuk, A. Ya. .

APPLIED PHYSICS LETTERS, 2008, 93 (04)

[10] Cavity grid for scalable quantum computation with superconducting circuits [J].

Helmer, F. ;

Mariantoni, M. ;

Fowler, A. G. ;

von Delft, J. ;

Solano, E. ;

Marquardt, F. .

EPL, 2009, 85 (05)

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