Noise-Free Measurement of Harmonic Oscillators with Instantaneous Interactions
arXiv:quant-ph/0606004 · doi:10.1103/PhysRevLett.98.020401
Abstract
We present a method of measuring the quantum state of a harmonic oscillator through instantaneous probe-system selective interactions of the Jaynes-Cummings type. We prove that this scheme is robust to general decoherence mechanisms, allowing the possibility of measuring fast-decaying systems in the weak-coupling regime. This method could be applied to different setups: motional states of trapped ions, microwave fields in cavity/circuit QED, and even intra-cavity optical fields.
4 pages, no figure, published in Physical Review Letters
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- Quantum Simulations with Cold Trapped Ions
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- The Minimum-Uncertainty Squeezed States for for Atoms and Photons in a Cavity
- Selective Control of the Symmetric Dicke Subspace in Trapped Ions
- Quantum nondemolition-like, fast measurement scheme for a superconducting qubit
- Phase-space theory for dispersive detectors of superconducting qubits
- Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
- Investigating the origin of time with trapped ions
- Short-time-interaction quantum measurement through an incoherent mediator