Multiphoton Process Observed in the Interaction of Microwave Fields with the Tunneling between Superconductor Films

“…Structure due to photon energies below this value is washed out by the thermal energy k B T . The frequency scaling firmly establishes PAT as the transport mechanism [9,[11][12][13][14]. The observation that the sidebands move linearly with frequency, while the ground and excited state resonances stay fixed, supports our identification of the different peaks.…”

Section: Pat: High Frequency Regimesupporting

confidence: 61%

“…If tunneling is a weak perturbation, the dc current in the presence of microwaves, I, is given by [9]:…”

Section: Pat Through a Single Junctionmentioning

confidence: 99%

“…A direct inclusion of the Tien and Gordon equations [9] in a master equation that takes into account Coulomb blockade [22] can be made by writing the tunnel rate through each barrier in the presence of microwaves Γ(E) in terms of the rates without microwaves Γ(E) [12]:…”

Section: Master Equation For Pat Through a Quantum Dotmentioning

confidence: 99%

“…This inelastic tunneling with discrete energy exchange is known as photon assisted tunneling (PAT). Microwave studies have a long tradition in the field of superconductor-insulator-superconductor tunnel junctions [8], for which the theory was first described by Tien and Gordon in 1963 [9]. Despite many proposals and a long search [10], it took thirty years before PAT was also observed in a non-superconducting system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photon Assisted Tunneling in Quantum Dots

Wiel

Oosterkamp

Franceschi

et al. 2002

View full text Add to dashboard Cite

Abstract. This internal file takes care of list definitions and 'general' point size options. 1.1. Section size commands added command: \little. This is identical to \tiny here. Allowed type provided values: 5/6, 6/7, 7/8, 8/9.5, 9/11, 10/12, 11/13, 12/14, 14/18, 17/22, 20 Textheight and textwidthThese are the main reason for the existence of these files. For some stupid reason, L A T E X calculates textwidth out of \paperwidth. We did want to support letter paper, but our \textwidth is fixed, with the margins being calculated.Presume \textwidth and \marginparwidth are set in the stylefile, or we're in trouble. The 2pc value is used to compensate for the 'dead' corners in most laserprinters.Calculations are done 'AtBeginDocument' to allow changes made in the preamble and later on in the stylefile. Abstract. This internal file takes care of list definitions and 'general' point size options. This is a 'tight' file. 6/7, 7/8, 8/9, 9/10.5, 10/11.5, 11/13, 12/14, 14/18, 17/22, 20

show abstract

Single-photon and multiphoton processes causing resonance in the transmission of electrons by a single potential barrier in a radiation field

Hagmann

1999

Int. J. Quant. Chem.

View full text Add to dashboard Cite

Simulations of electrons tunneling in a barrier for which the height varies sinusoidally with time show resonances increasing the transmitted current. For square barriers, these resonances occur when electrons are promoted above the barrier by absorbing quanta from the barrier oscillations, and the barrier length is an integer multiple of one‐half of the de Broglie wavelength. For several barriers having other profiles, we find that there is a single broad resonance centered at a wavelength equal to 0.9 times the wavelength for a photon having the energy to take the particle exactly to the top of the barrier. We attribute this difference to the fact that quanta may only be exchanged at the ends of a square barrier, whereas quanta are exchanged throughout the full length of barriers having other profiles—especially in regions of high electric field intensity. A Floquet expansion is used to examine the change in transmission caused by barrier modulation for electrons at the different energies caused by the exchange of quanta. We find that the wavelengths for resonance are proportional to the number of quanta absorbed by the particles, and attribute this observation to the requirement that specific values of absorbed energy are necessary for resonance. The increase in transmission caused by absorbing M quanta is proportional to the Mth power of the power flux density of the radiation causing barrier modulation. Thus, as the power is increased, the total transmission (including all energies) shows greater structure due to multiphoton processes. ©1999 John Wiley & Sons, Inc. Int J Quant Chem 75: 417–427, 1999

show abstract

Multiphoton Process Observed in the Interaction of Microwave Fields with the Tunneling between Superconductor Films

Cited by 841 publications

References 11 publications

Phase Dynamics of Superconducting Junctions Under Microwave Excitation in Phase Diffusive Regime

Phase Dynamics of Superconducting Junctions Under Microwave Excitation in Phase Diffusive Regime

Photon Assisted Tunneling in Quantum Dots

Single-photon and multiphoton processes causing resonance in the transmission of electrons by a single potential barrier in a radiation field

Contact Info

Product

Resources

About