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Memristive Sisyphus circuit for clock signal generation
Yuriy V. Pershin, Sergey N. Shevchenko, Franco Nori
Frequency generators are widely used in electronics. Here, we report the design and experimental realization of a memristive frequency generator employing a unique combination of o…
Controllable single-photon transport between remote coupled-cavity arrays
Wei Qin, Franco Nori
We develop a new approach for controllable single-photon transport between two remote one-dimensional coupled-cavity arrays, used as quantum registers, mediated by an additional on…
Electronic properties of graphene-based bilayer systems
A. V. Rozhkov, A. O. Sboychakov, A. L. Rakhmanov +1
This article reviews the theoretical and experimental work related to the electronic properties of bilayer graphene systems. Three types of bilayer stackings are discussed: the AA,…
Giant nonlinearity via breaking parity-time symmetry: a route to low-threshold phonon diodes
Jing Zhang, Bo Peng, Sahin Kaya Ozdemir +6
Nonreciprocal devices that permit wave transmission in only one direction are indispensible in many fields of science including, e.g., electronics, optics, acoustics, and thermodyn…
Metrology with -symmetric cavities: Enhanced sensitivity near the -phase transition
Zhong-Peng Liu, Jing Zhang, Şahin Kaya Özdemir +7
We propose and analyze a new approach based on parity-time () symmetric microcavities with balanced gain and loss to enhance the performance of cavity-assisted metrol…
Output Field-Quadrature Measurements and Squeezing in Ultrastrong Cavity-QED
Roberto Stassi, Salvatore Savasta, Luigi Garziano +2
We study the squeezing of output quadratures of an electro-magnetic field escaping from a resonator coupled to a general quantum system with arbitrary interaction strengths. The ge…
Multiphoton Quantum Rabi Oscillations in Ultrastrong Cavity QED
Luigi Garziano, Roberto Stassi, Vincenzo Macrì +3
When an atom is strongly coupled to a cavity, the two systems can exchange a single photon through a coherent Rabi oscillation. This process enables precise quantum-state engineeri…
Ground State Electroluminescence
Mauro Cirio, Simone De Liberato, Neill Lambert +1
Electroluminescence, the emission of light in the presence of an electric current, provides information on the allowed electronic transitions of a given system. It is commonly used…
Singularity of the time-energy uncertainty in adiabatic perturbation and cycloids on a Bloch sphere
Sangchul Oh, Xuedong Hu, Franco Nori +1
The adiabatic perturbation is shown to be singular from the exact solution of a spin-1/2 particle in a uniformly rotating magnetic field. Due to a non-adiabatic effect, its quantum…
Enhancement of mechanical effects of single photons in modulated two-mode optomechanics
Jie-Qiao Liao, C. K. Law, Le-Man Kuang +1
We propose an approach to enhance the mechanical effects of single photons in a two-mode optomechanical system. This is achieved by introducing a resonance-frequency modulation to…
Entanglement distribution over quantum code-division-multiple-access networks
Chang-long Zhu, Nan Yang, Yu-xi Liu +2
We present a method for quantum entanglement distribution over a so-called code-division-multiple-access network, in which two pairs of users share the same quantum channel to tran…
Increasing relative nonclassicality quantified by standard entanglement potentials by dissipation and unbalanced beam splitting
Adam Miranowicz, Karol Bartkiewicz, Neill Lambert +2
If a single-mode nonclassical light is combined with the vacuum on a beam splitter, then the output state is entangled. As proposed in [Phys. Rev. Lett. 94, 173602 (2005)], by meas…
Effects of anisotropy and disorder on the conductivity of Weyl semimetals
Ya. I. Rodionov, K. I. Kugel, Franco Nori
We study dc conductivity of a Weyl semimetal with uniaxial anisotropy (Fermi velocity ratio ) considering the scattering of charge carriers by a wide cl…
Pseudo-Chemotactic Drifts of Artificial Microswimmers
Pulak K. Ghosh, Yunyun Li, Fabio Marchesoni +1
We numerically investigate the motion of active artificial microswimmers diffusing in a fuel concentration gradient. We observe that, in the steady state, their probability density…
Mode coupling and photon antibunching in a bimodal cavity containing a dipole-quantum-emitter
Yu-Long Liu, Guan-Zhong Wang, Yu-xi Liu +1
We study the effect of mode-coupling on a single-photon device in which a dipole-quantum-emitter (DQE) is embedded in a bimodal whispering-gallery-mode cavity (WGMC). A scatterer i…
Tunable multiphonon blockade in coupled nanomechanical resonators
Adam Miranowicz, Jiri Bajer, Neill Lambert +2
A single phonon in a nonlinear nanomechanical resonator (NAMR) can block the excitation of a second phonon [Phys. Rev. A 82, 032101 (2010)]. This intrinsically quantum effect is ca…
Entangling superconducting qubits in a multi-cavity system
Chui-Ping Yang, Qi-Ping Su, Shi-Biao Zheng +1
Important tasks in cavity quantum electrodynamics include the generation and control of quantum states of spatially-separated particles distributed in different cavities. An intere…
Coherent manipulation of a Majorana qubit by a mechanical resonator
P. Zhang, Franco Nori
We propose a hybrid system composed of a Majorana qubit and a nanomechanical resonator, implemented by a spin-orbit-coupled superconducting nanowire, using a set of static and osci…
Tunable photon blockade in a hybrid system consisting of an optomechanical device coupled to a two-level system
Hui Wang, Xiu Gu, Yu-xi Liu +2
We study photon blockade and anti-bunching in the cavity of an optomechanical system in which the mechanical resonator is coupled to a two-level system (TLS). In particular, we ana…
Spin-orbit interactions of light
K. Y. Bliokh, F. J. Rodriguez-Fortuno, F. Nori +1
Light carries spin and orbital angular momentum. These dynamical properties are determined by the polarization and spatial degrees of freedom of light. Modern nano-optics, photonic…
Bistable Photon Emission from a Solid-State Single-Atom Laser
Neill Lambert, Franco Nori, Christian Flindt
We predict a bistability in the photon emission from a solid-state single-atom laser comprising a microwave cavity coupled to a voltage-biased double quantum dot. To demonstrate th…
Noise suppression of on-chip mechanical resonators by chaotic coherent feedback
Nan Yang, Jing Zhang, Hui Wang +5
We propose a method to decouple the nanomechanical resonator in optomechanical systems from the environmental noise by introducing a chaotic coherent feedback loop. We find that th…
Majorana fermions at the edge of superconducting islands
R. S. Akzyanov, A. L. Rakhmanov, A. V. Rozhkov +1
We investigate the properties of electron states localized at the edge of a superconducting island placed on the surface of a topological insulator in a magnetic field. In such sys…
Transverse and longitudinal angular momenta of light
Konstantin Y. Bliokh, Franco Nori
We review basic physics and novel types of optical angular momentum. We start with a theoretical overview of momentum and angular momentum properties of generic optical fields, and…