Effective Rabi dynamics of Rydberg atoms and robust high-fidelity quantum gates with a resonant amplitude-modulation field

Wu, Jin‐Lei; Su, Shi‐Lei; Wang, Yan; Song, Jie; Yan, Xin; Jiang, Yongyuan

doi:10.1364/ol.386765

Cited by 31 publications

(28 citation statements)

References 34 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Rydberg blockade, in which strong Rydberg-Rydberg interactions (RRIs) suppress simultaneous excitation of two Rydberg atoms within a finite volume [36][37][38][39], and the breaking of the blockade (anti-blockade) [40][41][42][43] are of central utility for these applications. For two atoms, it has been predicted that through modulation induced resonances, one can engineer the parameter space for both Rydberg-blockade and anti-blockade [44][45][46]. The latter is proposed to have applications in implementing robust quantum gates [46][47][48] and accelerating the formation of dissipative entangled steady states [49].…”

Section: Introductionmentioning

confidence: 99%

“…For two atoms, it has been predicted that through modulation induced resonances, one can engineer the parameter space for both Rydberg-blockade and anti-blockade [44][45][46]. The latter is proposed to have applications in implementing robust quantum gates [46][47][48] and accelerating the formation of dissipative entangled steady states [49]. To realize periodic driving in a Rydberg chain, either one can modulate the light field that couples the ground to the Rydberg state or applying additional radio-frequency fields.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Population trapping in a pair of periodically driven Rydberg atoms

Mallavarapu

Niranjan

et al. 2021

Phys. Rev. A

View full text Add to dashboard Cite

We study the population trapping extensively in a periodically driven Rydberg pair. The periodic modulation of the atom-light detuning effectively suppresses the Rabi couplings and, together with Rydberg-Rydberg interactions, leads to the state-dependent population trapping. We identify a simple yet a general scheme to determine population trapping regions using driving induced resonances, the Floquet spectrum, and the inverse participation ratio. Contrary to the single atom case, we show that the population trapping in the two-atom setup may not necessarily be associated with level crossings in the Floquet spectrum. Further, we discuss under what criteria population trapping can be related to dynamical stabilization, taking specific and experimentally relevant initial states, which include both product and the maximally entangled Bell states. The behavior of the entangled states is further characterized by the bipartite entanglement entropy.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Population trapping in a pair of periodically driven Rydberg atoms

Mallavarapu

Niranjan

et al. 2021

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…Adiabatic one- [14,15] and multistep [16,17] schemes may be robust but they are slow inevitably. In recent years, there also are interesting works done for quantum gates by using RAB regime, especially for one-step quantum gates [18][19][20][21][22][23][24]. Under the RAB regime, however the quantum gates are usually sensitive to the fluctuations in the RRI strength.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the emergence of the RAB usually demands the strict conditions among the RRI strength, the atomic transition detuning, and Rabi frequency [18][19][20][21]. In addition, the RAB regime is usually based on the secondor higher-order dynamics which is typically slow [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…The peculiarities of the present work can be concluded as following. First, the previous RAB regimes are realized usually by using the second-[9, 10, 18- 22, 24] or higher-order [23,34,35] perturbation theory. The present RAB regime has the first-order dynamics, so it has great potential of applications for highly efficient Rydberg pumping and fast multiqubit gates.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Resilient quantum gates on periodically driven Rydberg atoms

Wu,

Wang,

Han

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Fault-tolerant implementation of quantum gates is one of preconditions for realizing quantum computation. The platform of Rydberg atoms is one of the most promising candidates for achieving quantum computation. We propose to implement a controlled-Z gate on Rydberg atoms where an amplitude-modulated field is employed to induce Rydberg antiblockade. Gate robustness against the fluctuations in the Rydberg-Rydberg interaction can be largely enhanced by adjusting amplitudemodulated field. Furthermore, we introduce a Landau-Zener-Stückelberg transition on the target atom so as to improve the gate resilience to the deviation in the gate time and the drift in the pulse amplitude. With feasible experimental parameters, one can achieve the gate with low fidelity errors caused by atomic decay, interatomic dipole-dipole force, and Doppler effects. Finally, we generalize the gate scheme into multiqubit cases, where resilient multiqubit phase gates can be obtained in one step with an unchanged gate time as the number of qubits increases.

show abstract

Fast and Robust Multiqubit Gates on Rydberg Atoms by Periodic Pulse Engineering

Wang

Han

et al. 2022

Adv Quantum Tech

Self Cite

View full text Add to dashboard Cite

The idea of periodic pulse engineering (PPE) is exploited to achieve unconventional Rydberg pumping for a robust multiqubit gate on Rydberg atoms trapped in a 2D array. By designing component parameters in PPE, fast regimes of full and partial Rydberg antiblockade (RAB) among three atoms are explored. Furthermore, through assigning appropriate components in PPE a phenomenon of RAB-based blockade emerges and then a three-qubit gate can be achieved. It is identified that two kinds of Rydberg-Rydberg interaction (RRI), van der Waals interaction and dipole-dipole Förster resonance interaction, are both applicative for implementing the proposed scheme. Different from recent schemes of Rydberg atom multiqubit gates, the operated atoms are indistinguishable with respect to the laser field of PPE, and the present one-step scheme is essentially fast owing to the first-order dynamics where the dominant component in PPE is not degraded. In addition, the proposed multiqubit gate is robust against atomic decay and deviation of RRI strengths, because the excitation duration of atoms is short, with the total excitation number ≤ 1. This work may facilitate experimental demonstration of RAB-based gates of strongly coupled atoms.

show abstract

Effective Rabi dynamics of Rydberg atoms and robust high-fidelity quantum gates with a resonant amplitude-modulation field

Cited by 31 publications

References 34 publications

Population trapping in a pair of periodically driven Rydberg atoms

Population trapping in a pair of periodically driven Rydberg atoms

Resilient quantum gates on periodically driven Rydberg atoms

Fast and Robust Multiqubit Gates on Rydberg Atoms by Periodic Pulse Engineering

Contact Info

Product

Resources

About