W. T. Morley
Theory of double Cooper-pair tunneling and light emission mediated by a resonator
Morley, W. T.; Di Marco, A.; Mantovani, M.; Stadler, P.; Belzig, W.; Rastelli, G.; Armour, Andrew
Authors
A. Di Marco
M. Mantovani
P. Stadler
W. Belzig
G. Rastelli
ANDREW ARMOUR ANDREW.ARMOUR@NOTTINGHAM.AC.UK
Professor of Physics
Abstract
Photon emission by tunneling electrons can be encouraged by locating a resonator close to the tunnel junction and applying an appropriate voltage-bias. However, studies of normal metals show that the resonator also affects how the charges flow, facilitating processes in which correlated tunneling of two charges produces one photon. We develop a theory to analyze this kind of behavior in Josephson junctions by deriving an effective Hamiltonian describing processes where two Cooper-pairs generate a single photon. We determine the conditions under which the transport is dominated by incoherent tunneling of two Cooper-pairs, whilst also uncovering a regime of coherent double Cooper-pair tunneling. We show that the system can also display an unusual form of photon-blockade and hence could serve as a single-photon source.
Citation
Morley, W. T., Di Marco, A., Mantovani, M., Stadler, P., Belzig, W., Rastelli, G., & Armour, A. (2019). Theory of double Cooper-pair tunneling and light emission mediated by a resonator. Physical Review B, 100(5), https://doi.org/10.1103/physrevb.100.054515
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 7, 2019 |
Online Publication Date | Aug 23, 2019 |
Publication Date | Aug 1, 2019 |
Deposit Date | Aug 9, 2019 |
Publicly Available Date | Aug 12, 2019 |
Journal | Physical Review B |
Print ISSN | 2469-9950 |
Electronic ISSN | 2469-9969 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 100 |
Issue | 5 |
Article Number | 054515 |
DOI | https://doi.org/10.1103/physrevb.100.054515 |
Public URL | https://nottingham-repository.worktribe.com/output/2411007 |
Publisher URL | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.054515 |
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