Parity-dependent State Engineering and Tomography in the ultrastrong coupling regime
arXiv:1411.7968 · doi:10.1038/srep11818
Abstract
Reaching the strong coupling regime of light-matter interaction has led to an impressive development in fundamental quantum physics and applications to quantum information processing. Latests advances in different quantum technologies, like superconducting circuits or semiconductor quantum wells, show that the ultrastrong coupling regime (USC) can also be achieved, where novel physical phenomena and potential computational benefits have been predicted. Nevertheless, the lack of effective decoupling mechanism in this regime has so far hindered control and measurement processes. Here, we propose a method based on parity symmetry conservation that allows for the generation and reconstruction of arbitrary states in the ultrastrong coupling regime of light-matter interactions. Our protocol requires minimal external resources by making use of the coupling between the USC system and an ancillary two-level quantum system.
Improved version. 9 pages, 5 figures
References in corpus (15)
- Charge insensitive qubit design derived from the Cooper pair box
- Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
- Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Deep Strong Coupling Regime of the Jaynes-Cummings model
- Propagating phonons coupled to an artificial atom
- Ultra-Strong Light-Matter Coupling Regime with Polariton Dots
- Generalized rotating-wave approximation for arbitrarily large coupling
- Input-output theory of cavities in the ultra-strong coupling regime: the case of a time-independent vacuum Rabi frequency
- Ultrastrong coupling regime of cavity QED with phase-biased flux qubits
- State tomography of capacitively shunted phase qubits with high fidelity
- Protocols for optimal readout of qubits using a continuous quantum nondemolition measurement
- Tunable coupling in circuit quantum electrodynamics with a superconducting V-system
- Strong Coupling of a Quantum Oscillator to a Flux Qubit at its Symmetry Point
- Scalable quantum memory in the ultrastrong coupling regime