Simultaneous cooling by measuring one ancillary system

Abstract

We present a simultaneous-cooling protocol for a double-resonator system via projective measurements on an ancillary $V$-type qutrit. Through repeated measurements on the ground state of the ancillary system, the two resonators can be cooled down to their respective ground states from thermal states. With respect to the measurement-based cooling, an optimized measurement-interval ${\tau }_{\mathrm{opt}}$ is analytically obtained for the first time, which is inversely proportional to the collective thermal Rabi frequency ${\Omega }_{\mathrm{th}}$ as a function of the resonators' average population of the last round. Under about only $20$ optimized measurements, the average population of the target resonators can be reduced by $6$ orders in magnitude. Our simultaneous or collective cooling protocol is scalable to the systems with more numbers of resonators and robust to the fluctuation in the resonator frequency.

References in corpus (28)

• Cavity Optomechanics
• Laser cooling of a nanomechanical oscillator into its quantum ground state
• Atomic physics and quantum optics using superconducting circuits
• Experimental One-Way Quantum Computing
• Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
• Quantum computation over continuous variables
• Theory of ground state cooling of a mechanical oscillator using dynamical back-action
• Robustness of adiabatic quantum computation
• Single Photon Subradiance: Quantum control of spontaneous emission and ultrafast readout
• Nonreciprocal ground-state cooling of multiple mechanical resonators
• Photon shell game in three-resonator circuit quantum electrodynamics
• Simultaneous cooling and entanglement of mechanical modes of a micromirror in an optical cavity
• Non-adiabatic dynamics of two strongly coupled nanomechanical resonator modes
• Purification through Zeno-like Measurements
• Nuclear Spin Gyroscope based on the Nitrogen Vacancy Center in Diamond
• Wavelength-sized GaAs optomechanical resonators with GHz frequency
• Entanglement of Propagating Optical Modes via a Mechanical Interface
• Coherent Optomechanical State Transfer between Disparate Mechanical Resonators
• Realization of near-deterministic arithmetic operations and quantum state engineering
• Demon-like Algorithmic Quantum Cooling and its Realization with Quantum Optics
• Nondeterminstic ultrafast ground state cooling of a mechanical resonator
• Cooling atoms into entangled states
• Sideband cooling of nearly degenerate micromechanical oscillators in a multimode optomechanical system
• Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
• Multimode Phonon Cooling via Three Wave Parametric Interactions with Optical Fields
• Measurement-based cooling of a nonlinear mechanical resonator
• Ground state cooling of quantum systems via a one-shot measurement
• External-level assisted cooling by measurement

Cited by in corpus (5)

• Charging by quantum measurement
• Generating entangled states from coherent states in circuit-QED
• Refrigeration via purification through repeated measurements
• Optimizing measurement-based cooling by reinforcement learning
• An almost deterministic cooling by measurements