Indexed by:
Abstract:
We propose a general approach to implement ultrafast nonadiabatic geometric single-and two-qubit gates by employing counter-rotating effects. This protocol is compatible with most optimal control meth-ods used in previous rotating-wave approximation (RWA) protocols; thus, it is as robust as (or even more robust than) the RWA protocols. Using counter-rotating effects allows us to apply strong drives. There-fore, we can improve the gate speed by 5-10 times compared to the RWA counterpart for implementing high-fidelity (> 99.99%) gates. Such an ultrafast evolution (nanoseconds, even picoseconds) significantly reduces the influence of decoherence (e.g., the qubit dissipation and dephasing). Moreover, because the counter-rotating effects no longer induce a gate infidelity (in both the weak and strong driving regimes), we can achieve a higher fidelity compared to the RWA protocols. Therefore, in the presence of decoherence, one can implement ultrafast geometric quantum gates with > 99% fidelities.
Keyword:
Reprint 's Address:
Email:
Version:
Source :
PHYSICAL REVIEW APPLIED
ISSN: 2331-7019
Year: 2022
Issue: 6
Volume: 18
4 . 6
JCR@2022
3 . 8 0 0
JCR@2023
ESI Discipline: PHYSICS;
ESI HC Threshold:55
JCR Journal Grade:2
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 11
SCOPUS Cited Count: 12
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
Affiliated Colleges: