收稿日期: 2021-07-22
网络出版日期: 2022-04-28
基金资助
国家自然科学基金资助项目(12075145);上海市科委资助项目(2019SHZDZX01-ZX04);上海市高校特聘教授"东方学者"跟踪计划资助项目
Implementation of charge qubits in ultra-strong coupling regime and quantum-state transfer
Received date: 2021-07-22
Online published: 2022-04-28
基于超导量子电路中光与物质相互作用强度的可调性, 研究了库珀对盒子(Cooper-pair box, CPB)与LC谐振电路耦合的电路模型, 证明了可以通过减小CPB的约瑟夫森能量和增加LC谐振子阻抗, 实现光与物质的超强耦合(ultra-strong coupling, USC)和深度强耦合(deep-strong coupling, DSC)相互作用. 在此基础上, 进一步提出了具有一定抗噪性的 USC 双比特超导电路模型, 并以该模型作为非相干中介实现了两个Transmon系统间的量子态转移(quantum-state transfer, QST). 研究结果为在超导量子系统中实现USC相互作用提供了新的方案, 并有望进一步应用于量子调控、量子模拟和量子信息处理等领域.
俞静, 周沫, 黄堂友, 郝敏佳, 陈玺 . 电荷比特的超强藕合实现及量子态转移[J]. 上海大学学报(自然科学版), 2022 , 28(2) : 333 -346 . DOI: 10.12066/j.issn.1007-2861.2345
The Cooper-pair box (CPB) capacitively coupled to an LC resonatorwas considered in a superconducting quantum circuit that permittedthe high adjustability of light-matter interactions. The deep-strongcoupling (DSC) and ultra-strong coupling (USC) regimes could beobtained by increasing the impedance of the LC resonator anddecreasing the Josephson energy of the qubit. In this regard, atwo-qubit circuit, as a coherent mediator with a promising degree ofnoise immunity, was used to transfer quantum states between pairs ofTransmon qubits. This study provided new insights into USC regimesin light-matter interaction systems. Furthermore, it contributed tothe fields of quantum control, quantum simulation, and quantuminformation processing with superconducting quantum circuits.
| [1] | Moore G E. Cramming more components onto integrated circuits[J]. Electronics, 1965, 38(8): 114. |
| [2] | Feynman R P. Simulating physics with computers[J]. Int J Theor Phys, 1982, 21(6): 467-488. |
| [3] | Bouchiat V, Vion D, Joyez P, et al. Quantum coherence with a single Cooper pair[J]. Phys Scr, 1998, T76(1): 165. |
| [4] | Nakamura Y, Pashkin Y, Tsai J S. Coherent control of macroscopic quantum states in a single-Cooper-pair box[J]. Nature, 1999, 398(6730): 786-788. |
| [5] | Chiorescu I, Bertet P, Semba K, et al. Coherent dynamics of a flux qubit coupled to a harmonic oscillator[J]. Nature, 2004, 431(7005): 159-162. |
| [6] | Schoelkopf R J, Girvin S M. Wiring up quantum systems[J]. Nature, 2008, 451(7179): 664-669. |
| [7] | Blais A, Huang R S, Wallraff A, et al. Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation[J]. Phys Rev A, 2004, 69(6): 062320. |
| [8] | Bruzewicz C D, Chiaverini J, McConnell R, et al. Trapped-ion quantum computing: progress and challenges[J]. Appl Phys Rev, 2019, 6(2): 021314. |
| [9] | Wang P, Luan C Y, Qiao M, et al. Single ion qubit with estimated coherence time exceeding one hour[J]. Nat Commun, 2021, 12(1): 233. |
| [10] | Zhong H S, Wang H, Deng Y H, et al. Quantum computational advantage using photons[J]. Science, 2020, 370(6523): 1460-1463. |
| [11] | Wang X L, Luo Y H, Huang H L, et al. 18-qubit entanglement with six photons' three degrees of freedom[J]. Phys Rev Lett, 2018, 120(26): 260502. |
| [12] | Josephson B D. Possible new effects in superconductive tunnelling[J]. Phys Lett, 1962, 1(7): 251-253. |
| [13] | Josephson B D. The discovery of tunnelling supercurrents[J]. Rev Mod Phys, 1974, 46(2): 251-254. |
| [14] | Girvin S M. Circuit QED: superconducting qubits coupled to microwave photons[C]// Proceedings of the 2011 Les Houches Summer School on Quantum Machines. 2014. |
| [15] | Itoh T. Analysis of microstrip resonators[J]. IEEE Trans Micr Th Techs, 1974, 22(11): 946-952. |
| [16] | Göppl M, Fragner A, Baur M, et al. Coplanar waveguide resonators for circuit quantum electrodynamics[J]. J Appl Phys, 2008, 104(11): 113904. |
| [17] | Wallraff A, Schuster D I, Blais A, et al. Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics[J]. Nature, 2004, 431(7005): 162-167. |
| [18] | Walther H, Varcoe B T H, Englert B G, et al. Cavity quantum electrodynamics[J]. Rep Prog Phys, 2006, 69(5): 1325-1382. |
| [19] | Bosman S J, Gely M F, Singh V, et al. Approaching ultrastrong coupling in transmon circuit QED using a high-impedance resonator[J]. Phys Rev B, 2017, 95(22): 224515. |
| [20] | Niemczyk T, Deppe F, Huebl H, et al. Circuit quantum electrodynamics in the ultrastrong-coupling regime[J]. Nat Phys, 2010, 6(10): 776-776. |
| [21] | Forn-Díaz P, Lisenfeld J, Marcos D, et al. Observation of the Bloch-Siegert shift in a qubit-oscillator system in the ultrastrong coupling regime[J]. Phys Rev Lett, 2010, 105(23): 237001. |
| [22] | Kockum F, Miranowicz A, Liberato D, et al. Ultrastrong coupling between light and matter[J]. Nat Rev Phys, 2019, 1(1): 19-40. |
| [23] | Yoshihara F, Fuse T, Ashhab S, et al. Superconducting qubit-oscillator circuit beyond the ultrastrong-coupling regime[J]. Nat Phys, 2017, 13(1): 44-47. |
| [24] | Casanova J, Romero G, Lizuain I, et al. Deep strong coupling regime of the Jaynes-Cummings model[J]. Phys Rev Lett, 2010, 105(26): 263603. |
| [25] | Bishop L S. Circuit quantum electrodynamics[D]. New Haven: Yale University, 2010. |
| [26] | Kockum A F, Nori F. Quantum bits with Josephson junctions[M]. New York: Springer-Verlag, 2019. |
| [27] | Rossatto D Z, Villas-Bôas C J, Sanz M, et al. Spectral classification of coupling regimes in the quantum Rabi model[J]. Phys Rev A, 2017, 96(1): 013849. |
| [28] | Manucharyan V E, Baksic A, Ciuti C. Resilience of the quantum Rabi model in circuit QED[J]. J Phys A: Math Theor, 2017, 50(29): 294001. |
| [29] | Wendin G. Quantum information processing with superconducting circuits: a review[J]. Rep Prog Phys, 2017, 80(10): 106001. |
| [30] | Forn-Díaz P, Lamata L, Rico E, et al. Ultrastrong coupling regimes of light-matter inter- action[J]. Rev Mod Phys, 2019, 91(2): 025005. |
| [31] | Devoret M H, Girvin S, Schoelkopf R. Circuit-QED: how strong can the coupling between a Josephson junction atom and a transmission line resonator be[J]. Ann Phys, 2007, 16(10/11): 767-779. |
| [32] | Pechenezhskiy I V, Mencia R A, Nguyen L B, et al. The superconducting quasicharge qubit[J]. Nature, 2020, 585(7825): 368-371. |
| [33] | Cárdenas-López F A, Albarán-Arriagada F, Alvarado-Barrios G, et al. Incoherent-mediator for quantum state transfer in the ultrastrong coupling regime[J]. Sci Rep, 2017, 7(1): 4157. |
| [34] | Koch J, Yu T M, Gambetta J, et al. Charge-insensitive qubit design derived from the Cooper pair box[J]. Phys Rev A, 2007, 76(4): 042319. |
| [35] | Beaudoin F, Gambetta J M, Blais A. Dissipation and ultrastrong coupling in circuit QED[J]. Phys Rev A, 2011, 84(4): 043832. |
| [36] | Settineri A, Macrí V, Ridolfo A, et al. Dissipation and thermal noise in hybrid quantum systems in the ultrastrong-coupling regime[J]. Phys Rev A, 2018, 98(5): 053834. |
| [37] | Kryszewski S, Czechowska-Kryszk J. Master equation-tutorial approach[D]. Gdánsk: University of Gdánsk, 2008. |
| [38] | Astafiev O, Pashkin Y A, Nakamura Y, et al. Quantum noise in the Josephson charge qubit[J]. Phys Rev Lett, 2004, 93(26): 267007. |
| [39] | Forn-Díaz P, Romero G, Harmans C J P M, et al. Broken selection rule in the quantum Rabi model[J]. Sci Rep, 2016, 6(1): 26720. |
| [40] | Saira O P, Groen J P, Cramer J, et al. Entanglement genesis by ancilla-based parity measurement in 2D circuit QED[J]. Phys Rev Lett, 2014, 112(7): 070502. |
| [41] | Zaretskey V, Novikov S, Suri B, et al. Decoherence in a pair of long-lived Cooper-pair boxes[J]. J Appl Phys, 2013, 114(9): 094305. |
| [42] | Metcalfe M, Boaknin E, Manucharyan V, et al. Measuring the decoherence of a quantronium qubit with the cavity bifurcation amplifier[J]. Phys Rev B, 2007, 76(17): 174516. |
/
| 〈 |
|
〉 |
