Tunneling rates of single electrons on liquid helium in an extracting field
Yükleniyor...
Dosyalar
Tarih
2009-02
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer/Plenum Publishers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We calculated the tunneling rates of single electrons from the quasi-stationary states on both liquid He-4 and He-3 in an extracting electric field. The rates were obtained from the widths of the resonance lineshapes of the asymptotic amplitude of the wave function for the electron. The calculations were carried out in the limit of strong tunneling which leads to tunneling rates of the order of 1 GHz, and is of recent interest in a proposed quantum-computer system using the electronic states of electrons on helium as qubits. We find that the resonances can, in general, be described by Fano lineshapes. Our results, in addition to presenting quantitative information involving the read-out operations of qubits, clarify that when tunneling is weak the resonances are sharp and more accurately Lorentzian and that the observed Fano lineshapes result from strong tunneling leading to fat resonances and hence asymmetry.
Açıklama
This work was supported in part by NSF grant EIS-0085922.
Anahtar Kelimeler
Tunneling, Electrons on helium, Quantum computing, Resonance lineshapes, Surface-state electrons, Escape, Electric fields, Electron tunneling, Electronic states, Electrons, Helium, Liquefied gases, Quantum computers, Quantum optics, Resonance, Superfluid helium, Wave functions, Electronson helium, Quantitative information, Quasi-stationary state, Read-out operation, Single electron, Tunneling rates, Extraction
Kaynak
Journal of Low Temperature Physics
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
154
Sayı
3-4
Künye
Karakurt, İ. (2009). Tunneling rates of single electrons on liquid helium in an extracting field. Journal of Low Temperature Physics, 154(3-4), 77-84. doi:10.1007/s10909-008-9852-0
