Simultaneous preparation of two optical cat states based on a nondegenerate optical parametric amplifier
arXiv:2305.08426 · doi:10.1002/andp.202300010
Abstract
The optical cat state, known as the superposition of coherent states, has broad applications in quantum computation and quantum metrology. Increasing the number of optical cat states is crucial to implement complex quantum information tasks based on them. Here, we prepare two optical cat states simultaneously based on a nondegenerate optical parametric amplifier. By subtracting one photon from each of two squeezed vacuum states, two odd cat states with orthogonal superposition direction in phase space are prepared simultaneously, which have similar fidelity of 60% and amplitude of 1.2. Compared with the traditional method to generate two odd optical cat states based on two degenerate optical parametric amplifiers, only one nondegenerate optical parametric amplifier is applied in our experiment, which saves half of the quantum resource of nonlinear cavities. The presented results make a step toward preparing the four-component cat state, which has potential applications in fault-tolerant quantum computation.
References in corpus (38)
- Continuous-variable optical quantum state tomography
- Quantum computation with optical coherent states
- Generation of a superposition of odd photon number states for quantum information networks
- Confining the state of light to a quantum manifold by engineered two-photon loss
- Quantum metrology with entangled coherent states
- Entangled coherent states: teleportation and decoherence
- Testing the limits of quantum mechanical superpositions
- Efficient Quantum Computation using Coherent States
- Observation of multi-component atomic Schrödinger cat states of up to 20 qubits
- Iterative maximum-likelihood reconstruction in quantum homodyne tomography
- Performance and structure of single-mode bosonic codes
- Controllable generation of highly nonclassical states from nearly pure squeezed vacua
- Fault-tolerant linear optical quantum computing with small-amplitude coherent states
- Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum
- Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
- Conditional Production of Superpositions of Coherent States with Inefficient Photon Detection
- Deterministic creation of entangled atom-light Schrödinger-cat states
- Breeding the optical Schroedinger's cat state
- Schrodinger cats and their power for quantum information processing
- Narrowband frequency tunable light source of continuous quadrature entanglement
- Experimental preparation of eight-partite linear and two-diamond shape cluster states for photonic qumodes
- A scheme for quantum teleportation between discrete and continuous encodings of an optical qubit
- Generating Large Cats with Nine Lives: Long-Lived Macroscopically Distinct Superposition States in Atomic Ensembles
- Nonadiabatic geometric quantum computation with cat qubits via invariant-based reverse engineering
- Experimental demonstration of a Hadamard gate for coherent state qubits
- Entanglement and teleportation between polarization and wave-like encodings of an optical qubit
- Amplification of realistic cat-like states by homodyne heralding
- Deterministic distribution of multipartite entanglement and steering in a quantum network by separable states
- Experimental demonstration of remotely creating Wigner negativity via quantum steering
- A high-fidelity single-photon source based on a type-II optical parametric oscillator
- Fault-tolerant multiqubit geometric entangling gates using photonic cat-state qubits
- Quantifying quantum coherence of optical cat states
- Generating and detecting entangled cat states in dissipatively coupled degenerate optical parametric oscillators
- Deterministic generation of a four-component optical cat state
- Experimental preparation and manipulation of squeezed cat states via an all-optical in-line squeezer
- Tracking Quantum Error Correction
- Remote preparation and manipulation of squeezed light
- Enhancing dissipative cat-state generation via nonequilibrium pump fields