Towards standing-wave Mølmer-Sørensen gates on a quadrupole transition

Bazavan, Oana; Saner, Sebastian; Minder, Mariella; Hughes, Amy; Srinivas, R.; Lucas, David M.; Ballance, Chris

doi:10.26226/m.6275705766d5dcf63a31137e

Cited by 1 publication

(2 citation statements)

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“…It could also be extended to the axial direction and combined with other parallel gate schemes that use motional modes only along one principal axis [3,4,6] to further increase the maximum number of simultaneous two-qubit gates. Finally, other entangling gate mechanisms, such as light shift gates, [9,22] those driven by a synthetic 𝜎 z spin-dependent force, [20] the multi-qubit gate based on the Cirac-Zoller scheme with ancillary motional states, [21] and gates based on mode squeezing via second-sideband driving [17,19] can be pairwise-parallelized in the same way.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

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Pairwise‐Parallel Entangling Gates on Orthogonal Modes in a Trapped‐Ion Chain

Zhu,

Green,

Nguyen

et al. 2023

Adv Quantum Tech

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Parallel operations are important for both near‐term quantum computers and larger‐scale fault‐tolerant machines because they reduce execution time and qubit idling. This study proposes and implements a pairwise‐parallel gate scheme on a trapped‐ion quantum computer. The gates are driven simultaneously on different sets of orthogonal motional modes of a trapped‐ion chain. This work demonstrates the utility of this scheme by creating a Greenberger‐Horne‐Zeilinger (GHZ) state in one step using parallel gates with one overlapping qubit. It also shows its advantage for circuits by implementing a digital quantum simulation of the dynamics of an interacting spin system, the transverse‐field Ising model. This method effectively extends the available gate depth by up to two times with no overhead when no overlapping qubit is involved, apart from additional initial cooling. This scheme can be easily applied to different trapped‐ion qubits and gate schemes, broadly enhancing the capabilities of trapped‐ion quantum computers.

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Section: Conclusion and Discussionmentioning

confidence: 99%

“…The idea is directly applicable to any addressed entangling gate scheme that uses the ion motion. [3][4][5][6]8,9,[15][16][17][18][19][20][21][22] It can also be extended to the third motional direction.…”

Section: Introductionmentioning

confidence: 99%