Parallelizable synthesis of arbitrary single-qubit gates with linear optics and time-frequency encoding

Henry, Antoine; Raghunathan, Ravi; Ricard, Guillaume; Lefaucher, Baptiste; Miatto, Filippo M.; Belabas, Nadia; Zaquine, Isabelle; Alléaume, Romain

doi:10.1103/physreva.107.062610

Cited by 2 publications

(1 citation statement)

References 34 publications

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“…In the current scheme, the waveforms of all modulation parameters (including pulse areas, detunings and phases) are the square wave, which can be obtained by various technical means in different physical platforms. For example, in an atomic system driven by laser fields, pulse areas (detunings) is easily modulated through changing the intensity (frequency) of a tunable laser beam [85], while it is feasible to use an electro-optic modulator to impose the required phase shift [86]. Another typical example can be found in the superconducting circuit [87,88].…”

Section: Discussionmentioning

confidence: 99%

High-fidelity quantum gates via optimizing short pulse sequences in three-level systems

Zhang,

Liu,

Song

et al. 2024

New J. Phys.

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We propose a robust and high-fidelity scheme for realizing universal quantum gates by optimizing short pulse sequences in a three-level system. To alleviate the sensitivity to the errors, we recombine all elements of error matrices to construct a cost function with three types of weight factors. The modulation parameters are obtained by searching for the minimum value of this cost function. The purposes of introducing the weight factors are to reduce the detrimental impact of high-order error matrices, suppress population leakage to the third state, correct the operational error in the qubit space, and optimize the total pulse area of short pulse sequences. The results demonstrate that the optimized sequences exhibit strong robustness against errors and effectively reduce the total pulse area. Therefore, this work presents a valuable method for achieving exceptional robustness and high speed in quantum computations.

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Section: Discussionmentioning

confidence: 99%

High-fidelity quantum gates via optimizing short pulse sequences in three-level systems

Zhang,

Liu,

Song

et al. 2024

New J. Phys.

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Robust Quantum State Manipulation by Composite Pulses in Five‐Level Systems

Wang,

Shi,

Chen

et al. 2024

Adv Quantum Tech

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A scheme is proposed for achieving robust population inversion in five‐level systems by means of composite pulses. An example of such a system consists of the magnetic sublevels with angular momenta and . Through elaborately constructing the relative phases of pulse pairs, the composite sequences perform well in suppressing the uncorrelated pulse area errors. In particular, the five pulse‐pair sequence possesses good robustness and a short evolution time. The composite sequences are further designed to compensate for a single type of pulse area errors to any desired order. This work provides a high‐efficiency way for robust quantum state manipulation in five‐level systems.

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Parallelizable synthesis of arbitrary single-qubit gates with linear optics and time-frequency encoding

Cited by 2 publications

References 34 publications

High-fidelity quantum gates via optimizing short pulse sequences in three-level systems

High-fidelity quantum gates via optimizing short pulse sequences in three-level systems

Robust Quantum State Manipulation by Composite Pulses in Five‐Level Systems

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