Air-filled metal-pipe rectangular waveguides (MPRWGs) represent one of the most important forms of guided-wave structure for terahertz applications. Well-known commercial electromagnetic modelling software packages currently employ over-simplified intrinsic frequency dispersion models for the bulk conductivity of normal metals used in terahertz structures at room temperature. This paper has com...

We study the implementation of a high fidelity controlled-phase gate in Rydberg quantum computer. The protocol is based on symmetric with respect to two qubits as experimentally realized by Levine et al. [Phys. Rev. Lett. 123, 170503 (2019)], but allows for arbitrary pulse shapes time-dependent detuning. Optimizing shapes, we introduce laser pulses which shorten time spent state 10% and reduce ...

The quantum theory of the mazer in the nonresonant case ~a detuning between the cavity mode and the atomic transition frequencies is present! is described. The generalization from the resonant case is far from being direct. Interesting effects of the mazer physics are pointed out. In particular, it is shown that the cavity may slow down or speed up the atoms according to the sign of the detunin...

We discuss the axial dynamics of laser-cooled relativistic C ion beams at moderate bunching voltages. Schottky noise spectra measured at a beam energy of 122 MeV/u are compared to simulations of the axial beam dynamics. Ions confined in the bucket are addressed by the narrow-band force of a laser beam counter-propagating to the ion beam, while the laser frequency is detuned relatively to the co...

In previous work, we have shown that second-order phase locked loop (PLL) with sinusoidal phase detector characteristics have a separatrix cycle for a certain value of closed loop gain. It was verified that bifurcation from a stable separatrix cycle is the mechanism responsible for breaking the limit cycle associated with the PLL’s out-of lock state and the loop pulls in (phase lock). The value...

Fig 2: Schematic of test coil with interchangeable detuning circuits. Pickup loops P1 and P2 are used to quantify detuning. 4879 Enhancement Mode GaN on Silicon (eGaN® FETs) for Coil Detuning Michael Twieg, Matthew J Riffe, Michael de Rooij, and Mark A Griswold Dept. of Electrical Engineering and Computer Science, Case Western Reserve University, Cleveland, OH, United States, Dept. of Biomedica...

sensors for reducing disturbing influences from the radio channel as well as the separation of the sensor element from the SAW device into the matching network are already presented [1]. Here the change of the difference frequency is the sensor signal. Corrected matching was used to integrate the sensor function in the matching network [2], e.g. as a capacitive sensor. For passive wireless sens...

We investigate the entanglement dynamics between two dipole-coupled qubits interacting with vacuum or thermal fields of lossless resonators. Double Jaynes-Cummings model and two-atom Jaynes-Cummings model are considered taking into account detuning and direct dipole-dipole interaction. Using the dressed-states technique we derive the exact solutions for models under consideration. The computer ...

Recent experiments have explored the response of a single modeoptically injected QD laser. The experiments identify a domain ofbistability between two steady states at negative detuning and a Hopfbifurcation close to the locking threshold at positive detuning. More-over, the laser is stable for all injection levels at zero detuning. Theseobservations lead to a stability ...

We investigate in this paper the dynamics of entanglement between a QD spin qubit and a single photon qubit inside a quantum network node, as well as its robustness against various decoherence processes. First, the entanglement dynamics is considered without decoherence. In the small detuning regime Δ 78μeV , there are three different conditions for maximum entanglement, which occur after 71, 9...