1. |
- Hoi, Io Chun, 1984, et al.
(författare)
-
Demonstration of a Single-Photon Router in the Microwave Regime
- 2011
-
Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 107:7
-
Tidskriftsartikel (refereegranskat)abstract
- We have embedded an artificial atom, a superconducting transmon qubit, in an open transmission line and investigated the strong scattering of incident microwave photons (similar to 6 GHz). When an input coherent state, with an average photon number N
|
|
2. |
- Hoi, Io Chun, 1984, et al.
(författare)
-
Microwave quantum optics with an artificial atom in one-dimensional open space
- 2013
-
Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 15, s. Article Number: 025011 -
-
Tidskriftsartikel (refereegranskat)abstract
- We address recent advances in microwave quantum optics with artificial atoms in one-dimensional (1D) open space. This field relies on the fact that the coupling between a superconducting artificial atom and propagating microwave photons in a 1D open transmission line can be made strong enough to observe quantum coherent effects, without using any cavity to confine the microwave photons. We investigate the scattering properties in such a system with resonant coherent microwaves. We observe the strong nonlinearity of the artificial atom and under strong driving we observe the Mollow triplet. By applying two resonant tones, we also observe the Autler-Townes splitting. Exploiting these effects, we demonstrate two quantum devices at the single-photon level in the microwave regime: the single-photon router and the photon-dnumber filter. These devices provide important steps toward the realization of an on-chip quantum network.
|
|
3. |
- Peropadre, B., et al.
(författare)
-
Scattering of coherent states on a single artificial atom
- 2013
-
Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 15, s. Article Number: 035009-
-
Tidskriftsartikel (refereegranskat)abstract
- In this work, we theoretically analyze a circuit quantum electrodynamics design where propagating quantum microwaves interact with a single artificial atom, a single Cooper-pair box. In particular, we derive a master equation in the so-called transmon regime, including coherent drives. Inspired by recent experiments, we then apply the master equation to describe the dynamics in both a two-level and a three-level approximation of the atom. In the two-level case, we also discuss how to measure photon antibunching in the reflected field and how it is affected by finite temperature and finite detection bandwidth.
|
|