Macroscopic Quantum Superpositions via Dynamics in a Wide Double-Well Potential
arXiv:2303.07959 · doi:10.1103/PhysRevLett.132.023601
Abstract
We present an experimental proposal for the rapid preparation of the center of mass of a levitated particle in a macroscopic quantum state, that is a state delocalized over a length scale much larger than its zero-point motion and that has no classical analog. This state is prepared by letting the particle evolve in a static double-well potential after a sudden switchoff of the harmonic trap, following initial center-of-mass cooling to a sufficiently pure quantum state. We provide a thorough analysis of the noise and decoherence that is relevant to current experiments with levitated nano- and microparticles. In this context, we highlight the possibility of using two particles, one evolving in each potential well, to mitigate the impact of collective sources of noise and decoherence. The generality and scalability of our proposal make it suitable for implementation with a wide range of systems, including single atoms, ions, and Bose-Einstein condensates. Our results have the potential to enable the generation of macroscopic quantum states at unprecedented scales of length and mass, thereby paving the way for experimental exploration of the gravitational field generated by a source mass in a delocalized quantum state.
arXiv comment6 pages, 3 figures, 1 table
References in corpus (53)
- Gaussian Quantum Information
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
- Direct Observation of Second Order Atom Tunnelling
- Atom interferometry with Bose-Einstein condensates in a double-well potential
- Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
- Ion-trap measurements of electric-field noise near surfaces
- Levitodynamics: Levitation and control of microscopic objects in vacuum
- Sub-Planck spots of Schroedinger cats and quantum decoherence
- Real-time optimal quantum control of mechanical motion at room temperature
- Colloquium: Quantum interference of clusters and molecules
- Decoherence of matter waves by thermal emission of radiation
- Direct Measurement of Photon Recoil from a Levitated Nanoparticle
- Quantum control of a nanoparticle optically levitated in cryogenic free space
- Cavity cooling a single charged nanoparticle
- Coupled quantized mechanical oscillators
- Quantum Superposition of Massive Objects and Collapse Models
- Two Fermions in a double well: Exploring a fundamental building block of the Hubbard model
- Quantum Superposition of Massive Objects and the Quantization of Gravity
- Loss and heating of particles in small and noisy traps
- Large quantum superpositions of a levitated nanodiamond through spin-optomechanical coupling
- Near-field interferometry of a free-falling nanoparticle from a point-like source
- Matter Wave Interferometry of a Levitated Thermal Nano-Oscillator Induced and Probed by a Spin
- Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle
- Trapped-ion antennae for the transmission of quantum information
- Adiabatic radio frequency potentials for the coherent manipulation of matter waves
- Observation of strong and tunable light-induced dipole-dipole interactions between optically levitated nanoparticles
- Entangling two transportable neutral atoms via local spin exchange
- Free Nano-Object Ramsey Interferometry for Large Quantum Superpositions
- Large Quantum Delocalization of a Levitated Nanoparticle using Optimal Control: Applications for Force Sensing and Entangling via Weak Forces
- On-chip quantum interference of a superconducting microsphere
- Probing Macroscopic Quantum Superpositions with Nanorotors
- Generation and Detection of Atomic Spin Entanglement in Optical Lattices
- Optical cold damping of neutral nanoparticles near the ground state in an optical lattice
- Two-dimensional quantum motion of a levitated nanosphere
- Decoherence and fidelity in ion traps with fluctuating trap parameters
- Wigner Function Evolution of Quantum States in Presence of Self-Kerr Interaction
- Coherent Inflation for Large Quantum Superpositions of Microspheres
- High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures
- Enhanced force sensitivity and entanglement in periodically driven optomechanics
- Proposal for a nanomechanical qubit
- Extending vacuum trapping to absorbing objects with hybrid Paul-optical traps
- Electric-Field Noise above a Thin Dielectric Layer on Metal Electrodes
- Recoil-limited feedback cooling of single nanoparticles near the ground state in an optical lattice
- Superconducting microsphere magnetically levitated in an anharmonic potential with integrated magnetic readout
- Two-Particle Interference with Double Twin-Atom Beams
- Linear-and-quadratic reservoir engineering of non-Gaussian states
- Quantum theory of light interaction with a Lorenz-Mie particle: Optical detection and three-dimensional ground-state cooling
- Characterizing twin-particle entanglement in double-well potentials
- Cubic nonlinear squeezing and its decoherence
- Interaction Between an Optically Levitated Nanoparticle and Its Thermal Image: Internal Thermometry via Displacement Sensing
- Robust Macroscopic Matter-Wave Interferometry with Solids
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- Quadrature squeezing enhances Wigner negativity in a mechanical Duffing oscillator
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- Microscopic theory of a precessing ferromagnet for ultrasensitive magnetometry
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- Tutorial: projector approach to master equations for open quantum systems
- Unitary death of Schrödinger's cat
- Nonlinear Phase Gates as Airy Transforms of the Wigner Function
- Gyroscopically stabilized quantum spin rotors
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- Experimental nonequilibrium memory erasure beyond Landauer's bound
- Pseudospectral method for solving PDEs using Matrix Product States
- Free expansion of a charged nanoparticle via electrostatic compensation
- Robust Negativity in the Quantum-to-Classical Transition of Kerr Dynamics
- Certifying Macroscopic Quantum Mechanics via Hypothesis Testing with Finite Data