A squeezed mechanical oscillator with milli-second quantum decoherence
arXiv:2208.13082 · doi:10.1038/s41567-023-02135-y
Abstract
An enduring challenge in constructing mechanical oscillator-based hybrid quantum systems is to ensure engineered coupling to an auxiliary degree of freedom while maintaining good mechanical isolation from the environment, that is, low quantum decoherence, consisting of thermal decoherence and dephasing. Here, we overcome this challenge by introducing a superconducting circuit optomechanical platform which exhibits a low quantum decoherence while having a large optomechanical coupling, which allows us to prepare the quantum ground and squeezed states of motion with high fidelity. We directly measure a thermal decoherence rate of 20.5 Hz (corresponding to T_1 = 7.7 ms) as well as a pure dephasing rate of 0.09 Hz, resulted in a 100-fold improvement of quantum-state lifetime compared to the prior optomechanical systems. This enables us to reach to 0.07 quanta motional ground state occupation (93% fidelity) and realize mechanical squeezing of -2.7 dB below zero-point-fluctuation. Furthermore, we observe the free evolution of mechanical squeezed state, preserving its non-classical nature over milli-second timescales. Such ultra-low quantum decoherence not only increases the fidelity of quantum control and measurement of macroscopic mechanical systems, but may also benefit interfacing with qubits, and places the system in a parameter regime suitable for tests of quantum gravity. (Keywords: Quantum optomechanics, Superconducting circuit electromechanics, Quantum squeezing, Quantum memory, Quantum coherence)
References in corpus (37)
- Cavity Optomechanics
- Sideband Cooling Micromechanical Motion to the Quantum Ground State
- Enhancing the sensitivity of the LIGO gravitational wave detector by using squeezed states of light
- Bidirectional and efficient conversion between microwave and optical light
- Quantum squeezing of motion in a mechanical resonator
- Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
- Entangled massive mechanical oscillators
- High-Fidelity Universal Gate Set for Be Ion Qubits
- Quantum transduction of optical photons from a superconducting qubit
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- Measurement-based quantum control of mechanical motion
- Ultra-coherent nanomechanical resonators via soft clamping and dissipation dilution
- Squeezing of quantum noise of motion in a micromechanical resonator
- Real-time optimal quantum control of mechanical motion at room temperature
- Nonreciprocal reconfigurable microwave optomechanical circuit
- Quantum control of a nanoparticle optically levitated in cryogenic free space
- Direct observation of deterministic macroscopic entanglement
- Creation and control of multi-phonon Fock states in a bulk acoustic wave resonator
- Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime
- Arbitrarily large steady-state bosonic squeezing via dissipation
- Continuous Force and Displacement Measurement Below the Standard Quantum Limit
- An optomechanical Bell test
- Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle
- A quantum memory at telecom wavelengths
- Mechanical Quantum Sensing in the Search for Dark Matter
- Faithful conversion of propagating quantum information to mechanical motion
- Optomechanical quantum teleportation
- Approaching the motional ground state of a 10 kg object
- A perspective on hybrid quantum opto- and electromechanical systems
- Ground State Cooling of an Ultracoherent Electromechanical System
- Superconducting circuit quantum computing with nanomechanical resonators as storage
- Searching for vector dark matter with an optomechanical accelerometer
- Prospects for observing gravitational forces between nonclassical mechanical oscillators
- Measurement of motion beyond the quantum limit by transient amplification
- Superconducting electro-mechanics to test Diósi-Penrose effects of general relativity in massive superpositions
- Optomechanical Anti-lasing with Infinite Group Delay at a Phase Singularity
- Phonon-number resolution of voltage-biased mechanical oscillators with weakly-anharmonic superconducting circuits
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- Massive quantum systems as interfaces of quantum mechanics and gravity
- Quantum collective motion of macroscopic mechanical oscillators
- Quantum metrology with a continuous-variable system
- Degeneracy-breaking and Long-lived Multimode Microwave Electromechanical Systems Enabled by Cubic Silicon-Carbide Membrane Crystals
- Magnon squeezing in the quantum regime
- Nanomechanical State Amplifier Based on Optical Inverted Pendulum
- Quantum squeezing amplification with a weak Kerr nonlinear oscillator
- Large amplitude mechanical coherent states and detection of weak nonlinearities in cavity optomechanics
- Optimal Phase-Insensitive Force Sensing with Non-Gaussian States
- Observation and mitigation of microwave echoes from dielectric defects in Josephson traveling wave amplifiers
- Phonon Pumping by Modulating the Ultrastrong Vacuum
- Cavity Optomechanical Probe of Gravity Between Massive Mechanical Oscillators
- Optimal Form Factors for Experimental Proposals on Gravity-Induced Entanglement
- Transient dynamics of the quantum Stuart-Landau oscillator
- Precision measurement for open systems by non-hermitian linear response
- Roto-translational optomechanics
- High- membrane resonators using ultra-high-stress crystalline TiN films
- Dynamics and Spectral Response of linear-quadratic optomechanical interaction: Effects of pure dephasing
- Strongly driven cavity quantum electrodynamical-optomechanical hybrid system
- A Sub-kHz Mechanical Resonator Passively Cooled to 6 mK
- Aluminum goalpost nano-mechanical devices at low temperatures