Cavity-free vacuum-Rabi splitting in circuit quantum acoustodynamics
arXiv:1811.09421 · doi:10.1103/PhysRevA.99.013840
Abstract
Artificial atoms coupled to surface acoustic waves (SAWs) have played a crucial role in the recent development of circuit quantum acoustodynamics (cQAD). In this paper, we have investigated the interaction of an artificial atom and SAWs beyond the weak coupling regime, focusing on the role of the interdigital transducer (IDT) that enables the coupling. We find a parameter regime in which the IDT acts as a cavity for the atom, rather than an antenna. In other words, the atom forms its own cavity. Similar to an atom coupled to an explicit cavity, this regime is characterized by vacuum-Rabi splitting, as the atom hybridizes with the phononic vacuum inside the IDT. This hybridization is possible because of the interdigitated coupling, which has a large spatial extension, and the slow propagation speed of SAWs. We work out a criterion for entering this regime from a model based on standard circuit-quantization techniques, taking only material parameters as inputs. Most notably, we find this regime hard to avoid for an atom on top of a strong piezoelectric material, such as LiNbO. The SAW-coupled atom on top of LiNbO can thus be regarded as an atom-cavity-bath system. On weaker piezoelectric materials, the number of IDT electrodes need to be large in order to reach this regime.
arXiv comment11 pages, 5 figures
References in corpus (30)
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Charge insensitive qubit design derived from the Cooper pair box
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- Ultrastrong coupling between light and matter
- Microwave photonics with superconducting quantum circuits
- Ultrastrong coupling regimes of light-matter interaction
- Quantum information processing with superconducting circuits: a review
- Propagating phonons coupled to an artificial atom
- Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
- Quantum acoustics with superconducting qubits
- Decoherence-free interaction between giant atoms in waveguide QED
- Black-box superconducting circuit quantization
- Circuit quantum acoustodynamics with surface acoustic waves
- Universal Quantum Transducers based on Surface Acoustic Waves
- Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
- Photonic Quantum Circuits with Time Delays
- The giant acoustic atom -- a single quantum system with a deterministic time delay
- Photonic tensor networks produced by a single quantum emitter
- Cavity quantum acoustic device in the multimode strong coupling regime
- Time-delayed quantum feedback control
- Scattering in the ultrastrong regime: nonlinear optics with one photon
- Qubit-assisted transduction for a detection of surface acoustic waves near the quantum limit
- Coupling of Surface Acoustic Waves to a Two Dimensional Electron Gas
- Experimental demonstration of a two-dimensional phonon cavity in the quantum regime
- Scattering of coherent states on a single artificial atom
- Surface acoustic wave unidirectional transducers for quantum applications
- Dynamical polaron ansatz: a theoretical tool for the ultra-strong coupling regime of circuit QED
- Route from spontaneous decay to complex multimode dynamics in cavity QED
- Interfacing planar superconducting qubits with high overtone bulk acoustic phonons
- Quantum acousto-optic transducer for superconducting qubits
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- Synthesizing electromagnetically induced transparency without a control field in waveguide QED using small and giant atoms
- Dark Exciton Giant Rabi Oscillations with no External Magnetic Field
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- Non-local scattering control in coupled resonator networks
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- Ultimate quantum limit for amplification: a single atom in front of a mirror