Quantum amplification of boson-mediated interactions

Burd, S. C.; Srinivas, R.; Knaack, H. M.; Ge, W.; Wilson, A. C.; Wineland, D. J.; Leibfried, D.; Bollinger, J. J.; Allcock, D. T. C.; Slichter, D. H.

doi:10.48550/arxiv.2009.14342

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…However, this measurement is challenging given our motional frequency drifts and the limited two-ion trap lifetime. We instead use an analysis of the squeezing of the ion motion (53) to estimate this dephasing, giving a motional coherence time of about 64 ms. This dephasing results in an error of 5.8 × 10 −4 in the entangled state fidelity.…”

Section: Motional Dephasingmentioning

confidence: 99%

High-fidelity laser-free universal control of two trapped ion qubits

Srinivas,

Burd,

Knaack

et al. 2021

Preprint

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Universal control of multiple qubits-the ability to entangle qubits and to perform arbitrary individual qubit operations-is a fundamental resource for quantum computation, simulation, and networking. Here, we implement a new laser-free scheme for universal control of trapped ion qubits based on microwave magnetic fields and radiofrequency magnetic field gradients. We demonstrate high-fidelity entanglement and individual control by creating symmetric and antisymmetric two-qubit maximally entangled states with fidelities

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Section: Motional Dephasingmentioning

confidence: 99%

High-fidelity laser-free universal control of two trapped ion qubits

Srinivas,

Burd,

Knaack

et al. 2021

Preprint

Self Cite

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“…One mode squeezing has been shown to enhance quantum metrology [19,21,45,46], the speed of entangling gates [47,48], and is an integral component of CVQC [2]. In trapped ions, squeezing of the motion can be generated through modulation of the trapping potential at twice the motional frequency [19,21], a diabatic change of the trapping frequency [19,49], a pair of laser beams with a difference frequency that is twice the motional frequency [26,50], or reservoir engineering [28].…”

Section: A One-mode Squeezingmentioning

confidence: 99%

Universal hybrid quantum computing in trapped ions

Sutherland,

Srinivas

2021

Preprint

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Using discrete and continuous variable subsystems, hybrid approaches to quantum information could enable more quantum computational power for the same physical resources. Here, we propose a hybrid scheme that can be used to generate the necessary Gaussian and non-Gaussian operations for universal continuous variable quantum computing in trapped ions. This scheme utilizes two linear spin-motion interactions to generate a broad set of non-linear effective spin-motion interactions including one and two mode squeezing, beam splitter, and trisqueezing operations in trapped ion systems. We discuss possible experimental implementations using laser-based and laser-free approaches.

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Quantum amplification of boson-mediated interactions

Cited by 2 publications

References 17 publications

High-fidelity laser-free universal control of two trapped ion qubits

High-fidelity laser-free universal control of two trapped ion qubits

Universal hybrid quantum computing in trapped ions

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