Unitary death of Schrödinger's cat
arXiv:2407.04389 · doi:10.1103/PhysRevA.110.L030202
Abstract
We analyze dynamics of the Rabi model describing interactions of a qubit with a single soft-mode oscillator. We show that the model with a slightly violated parity generates symmetric Schr{ö}dinger cat states of the oscillator, which suddenly perish in a spontaneous unitary process similar to the measurement-induced wave-function collapse. The effect is sufficiently robust to be tested experimentally, e.g., with trapped ions, macroscopic mechanical oscillators or superconducting circuits.
arXiv comment8 pages, 7 figures
References in corpus (42)
- Decoherence, einselection, and the quantum origins of the classical
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Scalable Quantum Simulation of Molecular Energies
- Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
- Phase space representation of quantum dynamics
- Encoding a qubit in a trapped-ion mechanical oscillator
- Quantum criticality as a resource for quantum estimation
- Critical Quantum metrology with a finite-component quantum phase transition
- Understanding quantum measurement from the solution of dynamical models
- Resolution of Gauge Ambiguities in Ultrastrong-Coupling Cavity QED
- Deterministic creation of entangled atom-light Schrödinger-cat states
- Shortcuts to Adiabaticity for the Quantum Rabi Model: Efficient Generation of Giant Entangled cat States via Parametric Amplification
- Dynamic framework for criticality-enhanced quantum sensing
- Schrödinger cat states of a 16-microgram mechanical oscillator
- Fast Universal Control of an Oscillator with Weak Dispersive Coupling to a Qubit
- Efficient multiphoton sampling of molecular vibronic spectra on a superconducting bosonic processor
- Present status and future challenges of non-interferometric tests of collapse models
- Model-Free Quantum Control with Reinforcement Learning
- Gated conditional displacement readout of superconducting qubits
- Excited-state quantum phase transitions
- Quantum control of bosonic modes with superconducting circuits
- Observation of quantum interference between separated mechanical oscillator wavepackets
- Spin-motion entanglement and state diagnosis with squeezed oscillator wavepackets
- Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences
- Excited-state quantum phase transition in the Rabi model
- Scalable quantum computer with superconducting circuits in the ultrastrong coupling regime
- Quantum simulation of molecular spectroscopy in trapped-ion device
- A critical Schrödinger cat qubit
- Sequential modular position and momentum measurements of a trapped ion mechanical oscillator
- Combining critical and quantum metrology
- Contextual Wavefunction Collapse: An integrated theory of quantum measurement
- Quantum quench dynamics in Dicke superradiance models
- Macroscopic Quantum Superpositions via Dynamics in a Wide Double-Well Potential
- Observation of wave-packet branching through an engineered conical intersection
- Simulating Chemistry on Bosonic Quantum Devices
- Dynamical quantum phase transitions in a spinor Bose-Einstein condensate and criticality enhanced quantum sensing
- Unconditional preparation of squeezed vacuum from Rabi interactions
- Simulating Molecular Spectroscopy with Circuit Quantum Electrodynamics
- Deterministic nonlinear phase gates induced by a single qubit
- Deterministic nonlinear gates with oscillators mediated by a qubit
- Robust Macroscopic Schrödinger's Cat on a Nucleus
- Exactly solvable quantum state reduction models with time-dependent coupling