Generation of three-dimensional entanglement between two antiblockade Rydberg atoms with detuning-compensation-induced effective resonance

Han, Jianchao; Wu, Jin‐Lei; Wang, Yan; Jiang, Yongyuan; Xia, Yan; Song, Jie

doi:10.1088/1555-6611/ab7665

Cited by 7 publications

(3 citation statements)

References 77 publications

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“…There are several methods eliminating Stark shifts, such as phase corrections [96,97], auxiliary detuned transitions [30,55], and optimal search of detunings [98,99]. According to the second-order perturbation theory, the auxiliary atom-field interaction for the two atoms induces the Stark shifts on the ground states as…”

Section: Discussionmentioning

confidence: 99%

Unselective ground-state blockade of Rydberg atoms for implementing quantum gates

Wu,

Wang,

Han

et al. 2021

Preprint

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A dynamics regime of Rydberg atoms, unselective ground-state blockade (UGSB), is proposed in the context of Rydberg antiblockade (RAB), where the evolution of two atoms is suppressed when they populate in an identical ground state. UGSB is used to implement a SWAP gate in one step without individual addressing of atoms. Aiming at circumventing common issues in RABbased gates including atomic decay, Doppler dephasing, and fluctuations in the interatomic coupling strength, we modify the RAB condition to achieve a dynamical SWAP gate whose robustness is much greater than that of the nonadiabatic holonomic one in the conventional RAB regime. In addition, on the basis of the proposed SWAP gates, we further investigate the implementation of a threeatom Fredkin gate by combining Rydberg blockade and RAB. The present work may facilitate to implement the RAB-based gates of strongly coupled atoms in experiment.

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Section: Discussionmentioning

confidence: 99%

Unselective ground-state blockade of Rydberg atoms for implementing quantum gates

Wu,

Wang,

Han

et al. 2021

Preprint

Self Cite

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“…Several techniques can be employed to mitigate Stark shifts, including phase adjustments [114,115], the use of auxiliary detuned transitions [116,117], and the optimal determination of detunings [118,119]. In the present case, additional lasers have been utilized to counteract the Stark shifts Ω 2 c /∆ affecting the control atoms C1 and C2.…”

Section: Acknowledgementmentioning

confidence: 99%

Quantum error rejection for faithful quantum communication over noise channels

Guo

Gao

et al. 2019

Sci. China Phys. Mech. Astron.

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Quantum error detection relies primarily on precise measurement of qubit parity, a fundamental operation in quantum information processing. Here, we introduce a resilient parity-controlled gate tailored for detecting quantum errors within a 2D Rydberg atom array. Our method enables the discrimination between even and odd parities of virtually excited control atoms by tracking the dynamic evolution of an auxiliary atom. Using spin-exchange dipolar interactions of Rydberg states and single-and two-photon driving between ground states and Rydberg states, our method speeds up Rydberg-parity measurements by a large amount compared to previous methods. In practical application, we explore three-qubit repetition codes, standard surface codes featuring stabilizers in the forms ZZZZ and XXXX, as well as rotated surface codes in the XZZX configuration, facilitating the measurement of stabilizers with a single-shot readout. We carry out thorough numerical simulations to evaluate the feasibility of our strategy, considering potential experimental imperfections such as undesired interactions between Rydberg states, fluctuations in atomic positions, dephasing noise, and laser amplitude inhomogeneities. Particular emphasis is placed on ensuring the reliability and advantages of the physical mechanisms of the parity meter. These results affirm the robustness and viability of our protocol, positioning it as a promising candidate for quantum error detection employing the Rydberg atom system in the foreseeable future.

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“…The latter three terms are Stark shifts caused by large detuning conditions and can be eliminated by phase corrections [52,53] or auxiliary detuned transitions. [50,[54][55][56] Consequently, the effective Hamiltonian is further simplified to…”

mentioning

confidence: 99%

Nonadiabatic Holonomic Quantum Computation Based on Rydberg Ground State Blockade

Su 苏,

Wang 王,

Song 宋

et al. 2024

Chinese Phys. Lett.

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Quantum gates are crucial for quantum computation and quantum information processing. However, their effectiveness is often hindered by systematic errors and decoherence. Therefore, achieving resilient quantum gates to these factors is of great significance. In this paper, we present a method to construct nonadiabatic holonomic single- and two-qubit gates in a Rydberg ground-state-blockade regime. Our approach utilizes a far-off-resonant technique for the single-qubit gate and a modified Rydberg antiblockade for the two-qubit gate. The reduction of the population of single- and two-excitation Rydberg states and the nonadiabatic holonomic process during the construction of the gates ensure robustness to decoherence and systematic errors, respectively. Numerical results demonstrate the fidelity and robustness of our scheme. The proposed scheme holds promise for future applications in quantum computation and quantum information processing tasks.

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Generation of three-dimensional entanglement between two antiblockade Rydberg atoms with detuning-compensation-induced effective resonance

Cited by 7 publications

References 77 publications

Unselective ground-state blockade of Rydberg atoms for implementing quantum gates

Unselective ground-state blockade of Rydberg atoms for implementing quantum gates

Quantum error rejection for faithful quantum communication over noise channels

Nonadiabatic Holonomic Quantum Computation Based on Rydberg Ground State Blockade

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