Collapse and Revival of an Artificial Atom Coupled to a Structured Photonic Reservoir
Abstract
A structured electromagnetic reservoir can result in novel dynamics of quantum emitters. In particular, the reservoir can be tailored to have a memory of past interactions with emitters, in contrast to memory-less Markovian dynamics of typical open systems. In this Article, we investigate the non-Markovian dynamics of a superconducting qubit strongly coupled to a superconducting slow-light waveguide reservoir. Tuning the qubit into the spectral vicinity of the passband of this waveguide, we find non-exponential energy relaxation as well as substantial changes to the qubit emission rate. Further, upon addition of a reflective boundary to one end of the waveguide, we observe revivals in the qubit population on a timescale 30 times longer than the inverse of the qubit's emission rate, corresponding to the round-trip travel time of an emitted photon. By tuning of the qubit-waveguide interaction strength, we probe a crossover between Markovian and non-Markovian qubit emission dynamics. These attributes allow for future studies of multi-qubit circuits coupled to structured reservoirs, in addition to constituting the necessary resources for generation of multiphoton highly entangled states.
Additional Information
© Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Received 9 March 2020; revised 12 September 2021; accepted 17 September 2021; published 2 December 2021. We thank Hannes Pichler for fruitful discussions regarding the mirror measurements, MIT Lincoln Laboratories for the provision of a traveling-wave parametric amplifier [86] used for both spectroscopic and time-domain measurements in this work, Jen-Hao Yeh and Ben Palmer for the use of one of their cryogenic attenuators [87] for reducing thermal noise in the metamaterial waveguide, and Hengjiang Ren and Xueyue Zhang for help during measurements, fabrication, and writing. This work was supported by the AFOSR MURI Quantum Photonic Matter (Grant No. 16RT0696), the Institute for Quantum Information and Matter (IQIM), an NSF Physics Frontiers Center (Grant No. PHY-1125565) with support of the Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute (KNI) at Caltech. V. S. F. gratefully acknowledges support from NSF GFRP fellowship, and M. M. (A. S.) gratefully acknowledges support from a KNI (IQIM) postdoctoral fellowship.Attached Files
Published - PhysRevX.11.041043.pdf
Submitted - 2001.03240.pdf
Files
Name | Size | Download all |
---|---|---|
md5:252b19a094e7cf9d7e58faee8d224d94
|
5.0 MB | Preview Download |
md5:8548858e1d159fcbca79c8bfe863704b
|
2.6 MB | Preview Download |
Additional details
- Eprint ID
- 102473
- Resolver ID
- CaltechAUTHORS:20200409-164102679
- Air Force Office of Scientific Research (AFOSR)
- 16RT0696
- Institute for Quantum Information and Matter (IQIM)
- NSF
- PHY-1125565
- Gordon and Betty Moore Foundation
- Kavli Nanoscience Institute
- NSF Graduate Research Fellowship
- Created
-
2020-04-10Created from EPrint's datestamp field
- Updated
-
2022-05-10Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute, Institute for Quantum Information and Matter