133 citations · 387 across the 9 of their papers we have counts for
9 papers
Microwave-induced inverse Faraday effect in superconductors
A. Hamed Majedi
Inverse Faraday effect (IFE) in superconductors is proposed, where a static magnetization is generated under the influence of a circularly polarized microwave field. Classical mode…
Experimental Characterization of Ultrafast, Tunable and Broadband Optical Kerr Nonlinearity in Graphene
Siddharatha Thakur, Behrooz Semnani, Safieddin Safavi-Naeini +1
In this study we systematically measure the near-infrared spectral dependence, the sub-picosecond temporal evolution and pulse-width dependence of the effective Kerr coefficient ($…
Nonlinear quantum optical properties of graphene: the role of chirality and symmetry
Behrooz Semnani, Amir Hamed Majedi, Safieddin Safavi-Naeini
We present a semiclassical theory of linear and nonlinear optical response of graphene. The emphasis is placed on the nonlinear optical response of graphene from the standpoint of…
Superconducting Nanowire Single Photon Detector on Diamond
Haig A. Atikian, Amin Eftekharian, A. Jafari Salim +4
Superconducting nanowire single photon detectors (SNSPDs) are fabricated directly on diamond substrates and their optical and electrical properties are characterized. Dark count pe…
Efficient Single Photon Absorption by Optimized Superconducting Nanowire Geometries
Mohsen K. Akhlaghi, Haig Atikian, Jeff F. Young +2
We report on simulation results that shows optimum photon absorption by superconducting nanowires can happen at a fill-factor that is much less than 100%. We also present experimen…
Reduced Dark Counts in Optimized Geometries for Superconducting Nanowire Single photon Detectors
Mohsen K. Akhlaghi, Haig Atikian, Amin Eftekharian +2
We have experimentally compared the critical current, dark count rate and photo-response of 100nm wide superconducting nanowires with different bend designs. Enhanced critical curr…
Nonlinearity in Single Photon Detection: Modeling and Quantum Tomography
Mohsen K. Akhlaghi, A. Hamed Majedi, Jeff S. Lundeen
Single Photon Detectors are integral to quantum optics and quantum information. Superconducting Nanowire based detectors exhibit new levels of performance, but have no accepted qua…
Controlling a superconducting nanowire single-photon detector using tailored bright illumination
Lars Lydersen, Mohsen K. Akhlaghi, A. Hamed Majedi +2
We experimentally demonstrate that a superconducting nanowire single-photon detector is deterministically controllable by bright illumination. We found that bright light can tempor…
Ultrafast Linear Kinetic Inductive Photoresponse of YBa2Cu3O7-δ Meander-Line Structures by Photoimpedance Measurements
Haig A. Atikian, Behnood G. Ghamsari, Steven M. Anlage +1
We report the experimental demonstration of linear kinetic-inductive photoresponse of thin-film YBa2Cu3O7-δ (YBCO) meander-line structures, where the photoresponse amplitude, full-…