Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators
arXiv:2205.14841 · doi:10.1038/s41567-024-02585-y
Abstract
Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use as quantum platforms. The motional modes of trapped ions can be individually controlled and have good coherence properties. However, achieving high-fidelity two-mode operations and nondestructive measurements of the motional state has been challenging. Here we demonstrate the coherent exchange of single motional quanta between spectrally separated harmonic motional modes of a trapped-ion crystal. The timing, strength, and phase of the coupling are controlled through an oscillating electric potential with suitable spatial variation. Coupling rates that are much larger than decoherence rates enable demonstrations of high fidelity quantum state transfer and beamsplitter operations, entanglement of motional modes, and Hong-Ou-Mandel-type interference. Additionally, we use the motional coupling to enable repeated non-destructive projective measurement of a trapped-ion motional state. Our work enhances the suitability of trapped-ion motion for continuous-variable quantum computing and error correction and may provide opportunities to improve the performance of motional cooling and motion-mediated entangling interactions.
arXiv comment27 pages, 12 figures
References in corpus (43)
- Quantum information with continuous variables
- Review article: Linear optical quantum computing
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Encoding a qubit in an oscillator
- Experimental issues in coherent quantum-state manipulation of trapped atomic ions
- Quantum computation over continuous variables
- Observation of strong coupling between a micromechanical resonator and an optical cavity field
- Strongly Interacting Polaritons in Coupled Arrays of Cavities
- Quantum-coherent coupling of a mechanical oscillator to an optical cavity mode
- Circuit cavity electromechanics in the strong coupling regime
- Quantum phase transitions of light
- Continuous variable quantum cryptography
- Quantum dynamics of cold trapped ions, with application to quantum computation
- Multipartite entanglement for continuous variables: A quantum teleportation network
- Coherent coupling of molecular resonators with a micro-cavity mode
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- Real-time quantum error correction beyond break-even
- New class of quantum error-correcting codes for a bosonic mode
- Encoding a qubit in a trapped-ion mechanical oscillator
- Implementing a Universal Gate Set on a Logical Qubit Encoded in an Oscillator
- Direct observation of deterministic macroscopic entanglement
- Hardware-efficient autonomous quantum error correction
- Coupled quantized mechanical oscillators
- Controlled entanglement of two field modes in a Cavity Quantum Electrodynamics experiment
- Bosonic Quantum Codes for Amplitude Damping
- Deterministic entanglement of photons in two superconducting microwave resonators
- Error correction for continuous quantum variables
- Preparation and coherent manipulation of pure quantum states of a single molecular ion
- Beating the break-even point with a discrete-variable-encoded logical qubit
- Non-destructive state detection for quantum logic spectroscopy of molecular ions
- Entangled Mechanical Oscillators
- Trapped-ion antennae for the transmission of quantum information
- Entangling Bosonic Modes via an Engineered Exchange Interaction
- Synthetic Gauge Fields for Vibrational Excitations of Trapped ions
- Bose-Einstein Condensation and strong-correlation behavior of phonons in ion traps
- Trapped-Ion Quantum Simulator: Experimental Application to Nonlinear Interferometers
- Quantum superposition of a single microwave photon in two different "colour" states
- Observation of quantum interference between separated mechanical oscillator wavepackets
- Tunable spin-spin interactions and entanglement of ions in separate wells
- Arbitrary Waveform Generator for Quantum Information Processing with Trapped Ions
- Hybrid quantum computation gate with trapped ion system
- Two mode coupling in a single ion oscillator via parametric resonance
- Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators
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- Toward hybrid quantum simulations with qubits and qumodes on trapped-ion platforms
- Enhancement of nonclassical properties of two-mode squeezed vacuum state with postselected von Neumann measurement
- Dynamic Control of Coupling Regimes in Oscillator Systems via Tunable Open Channels
- Continuous Variable Structured Collision Models
- Two-Mode Bosonic State Tomography with Single-Shot Joint-Parity Measurement of a Trapped Ion
- Cancellation of phonon hopping in trapped ions by modulation of the trap potential