Experimental speedup of quantum dynamics through squeezing

Abstract

We show experimentally that a broad class of interactions involving quantum harmonic oscillators can be made stronger (amplified) using a unitary squeezing protocol. While our demonstration uses the motional and spin states of a single trapped ${}^{25}$Mg${}^{+}$ ion, the scheme applies generally to Hamiltonians involving just a single harmonic oscillator as well as Hamiltonians coupling the oscillator to another quantum degree of freedom such as a qubit, covering a large range of systems of interest in quantum information and metrology applications. Importantly, the protocol does not require knowledge of the parameters of the Hamiltonian to be amplified, nor does it require a well-defined phase relationship between the squeezing interaction and the rest of the system dynamics, making it potentially useful in instances where certain aspects of a signal or interaction may be unknown or uncontrolled.

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Cited by in corpus (9)

• Quantum amplification and simulation of strong and ultrastrong coupling of light and matter
• Quantum metrology with a continuous-variable system
• Quantum Optimal Control of Squeezing in Cavity Optomechanics
• Quantum Vector Signal Analyzer: Wideband Electric Field Sensing via Motional Raman Transitions
• Generation of Motional Squeezed States for Neutral Atoms in Optical Tweezers
• Protecting information in a parametrically driven hybrid quantum system
• Loss tolerant cross-Kerr enhancement via modulated squeezing
• Optimal Displacement Sensing with Spin-Dependent Squeezed States
• Amplifying Decoherence-Free Many-Body Interactions with Giant Atoms Coupled to Parametric Waveguide