Programable two-qubit gates in capacitively coupled flopping-mode spin qubits

被引：13

作者：

Cayao, Jorge ^{[1
,2
]}

Benito, Monica ^{[2
]}

Burkard, Guido ^{[2
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden

[2] Univ Konstanz, Dept Phys, D-78457 Constance, Germany

来源：

PHYSICAL REVIEW B | 2020年 / 101卷 / 19期

关键词：

QUANTUM COMPUTATION;

D O I：

10.1103/PhysRevB.101.195438

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent achievements in the field of gate-defined semiconductor quantum dots reinforce the concept of a spin-based quantum computer consisting of nodes of locally connected qubits which communicate with each other via superconducting circuit resonator photons. In this paper, we theoretically demonstrate a versatile set of quantum gates between adjacent spin qubits defined in semiconductor quantum dots situated within the same node of such a spin-based quantum computer. The electric dipole acquired by the spin of an electron that moves across a double quantum dot potential in a magnetic field gradient has enabled strong coupling to resonator photons and low-power spin control. Here we show that this flopping-mode spin qubit also provides the tunability to program multiple two-qubit gates. Since the capacitive coupling between these qubits brings about additional dephasing, we calculate the estimated infidelity of different two-qubit gates in the most immediate possible experimental

引用

页数：8

共 55 条

[41] Simultaneous Spin-Charge Relaxation in Double Quantum Dots [J].

Srinivasa, V. ;

Nowack, K. C. ;

Shafiei, M. ;

Vandersypen, L. M. K. ;

Taylor, J. M. .

PHYSICAL REVIEW LETTERS, 2013, 110 (19)

[42] Quantum gates between capacitively coupled double quantum dot two-spin qubits [J].

Stepanenko, Dimitrije ;

Burkard, Guido .

PHYSICAL REVIEW B, 2007, 75 (08)

[43] Fault-tolerant architecture for quantum computation using electrically controlled semiconductor spins [J].

Taylor, JM ;

Engel, HA ;

Dür, W ;

Yacoby, A ;

Marcus, CM ;

Zoller, P ;

Lukin, MD .

NATURE PHYSICS, 2005, 1 (03) :177-183

[44] Long-Distance Entanglement of Spin Qubits via Ferromagnet [J].

Trifunovic, Luka ;

Pedrocchi, Fabio L. ;

Loss, Daniel .

PHYSICAL REVIEW X, 2013, 3 (04)

[45] Long-Distance Spin-Spin Coupling via Floating Gates [J].

Trifunovic, Luka ;

Dial, Oliver ;

Trif, Mircea ;

Wootton, James R. ;

Abebe, Rediet ;

Yacoby, Amir ;

Loss, Daniel .

PHYSICAL REVIEW X, 2012, 2 (01)

[46]

Tyryshkin AM, 2012, NAT MATER, V11, P143, DOI [10.1038/NMAT3182, 10.1038/nmat3182]

[47] Microwave Photon-Mediated Interactions between Semiconductor Qubits [J].

van Woerkom, D. J. ;

Scarlino, P. ;

Ungerer, J. H. ;

Mueller, C. ;

Koski, J. V. ;

Landig, A. J. ;

Reichl, C. ;

Wegscheider, W. ;

Ihn, T. ;

Ensslin, K. ;

Wallraff, A. .

PHYSICAL REVIEW X, 2018, 8 (04)

[48] A two-qubit logic gate in silicon [J].

Veldhorst, M. ;

Yang, C. H. ;

Hwang, J. C. C. ;

Huang, W. ;

Dehollain, J. P. ;

Muhonen, J. T. ;

Simmons, S. ;

Laucht, A. ;

Hudson, F. E. ;

Itoh, K. M. ;

Morello, A. ;

Dzurak, A. S. .

NATURE, 2015, 526 (7573) :410-414

[49] Loading a quantum-dot based "Qubyte" register [J].

Volk, C. ;

Zwerver, A. M. J. ;

Mukhopadhyay, U. ;

Eendebak, P. T. ;

van Diepen, C. J. ;

Dehollain, J. P. ;

Hensgens, T. ;

Fujita, T. ;

Reichl, C. ;

Wegscheider, W. ;

Vandersypen, L. M. K. .

NPJ QUANTUM INFORMATION, 2019, 5 (1)

[50] State-conditional coherent charge qubit oscillations in a Si/SiGe quadruple quantum dot [J].

Ward, Daniel R. ;

Kim, Dohun ;

Savage, Donald E. ;

Lagally, Max G. ;

Foote, Ryan H. ;

Friesen, Mark ;

Coppersmith, Susan N. ;

Eriksson, Mark A. .

NPJ QUANTUM INFORMATION, 2016, 2

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