267 citations · 1.6k across the 36 of their papers we have counts for
36 papers
Superconducting cavity probes sliding ferroelectricity in small-angle twisted WSe
Krishnendu Maji, Supriya Mandal, Sriram H. +8
Ferroelectricity is a property of materials that exhibit spontaneous charge polarization. Ferroelectricity in 2D materials is interesting because of their applications in memory de…
Single-photon induced instabilities in a cavity electromechanical device
Tanmoy Bera, Mridul Kandpal, G. S. Agarwal +1
Cavity-electromechanical systems are extensively used for sensing and controlling the vibrations of mechanical resonators down to their quantum limit. The nonlinear radiation-press…
Instabilities near ultrastrong coupling in microwave optomechanical cavity
Soumya Ranjan Das, Sourav Majumder, Sudhir Kumar Sahu +3
With artificially engineered systems, it is now possible to realize the coherent interaction rate, which can become comparable to the mode frequencies, a regime known as ultrastron…
Prospects of cooling a mechanical resonator with a transmon qubit in c-QED setup
Sourav Majumder, Tanmoy Bera, Vibhor Singh
Hybrid devices based on the superconducting qubits have emerged as a promising platform for controlling the quantum states of macroscopic resonators. The nonlinearity added by a qu…
A fast tunable 3D-transmon architecture for superconducting qubit-based hybrid devices
Sourav Majumder, Tanmoy Bera, Ramya Suresh +1
Superconducting qubits utilize the strong non-linearity of the Josephson junctions. Control over the Josephson nonlinearity, either by a current bias or by the magnetic flux, can b…
SQ-CARS: A Scalable Quantum Control and Readout System
Ujjawal Singhal, Shantharam Kalipatnapu, Pradeep Kumar Gautam +5
Qubits are the basic building blocks of a quantum processor which require electromagnetic pulses in giga hertz frequency range and latency in nanoseconds for control and readout. I…
Superconducting vortex-charge measurement using cavity electromechanics
Sudhir Kumar Sahu, Supriya Mandal, Sanat Ghosh +2
As the magnetic field penetrates the surface of a superconductor, it results in the formation of flux-vortices. It has been predicted that the flux-vortices will have a charged vor…
Quantized conductance with non-zero shot noise as a signature of Andreev edge state
Manas Ranjan Sahu, Arup Kumar Paul, Jagannath Sutradhar +6
Electrical conductance measurements have limited scope in identifying Andreev edge states (AESs), which form the basis for realizing various topological excitations in quantum Hall…
Coplanar cavity for strong coupling between photons and magnons in van der Waals antiferromagnet
Supriya Mandal, Lucky N. Kapoor, Sanat Ghosh +6
We investigate the performance of niobium nitride superconducting coplanar waveguide resonators towards hybrid quantum devices with magnon-photon coupling. We find internal quality…
Large flux-mediated coupling in hybrid electromechanical system with a transmon qubit
Tanmoy Bera, Sourav Majumder, Sudhir Kumar Sahu +1
Control over the quantum states of a massive oscillator is important for several technological applications and to test the fundamental limits of quantum mechanics. Addition of an…
Elastic properties of few unit cell thick superconducting crystals of BiSrCaCuO
Sudhir Kumar Sahu, Digambar Jangade, Arumugam Thamizhavel +2
We present systematic measurements of the mechanical properties of few unit cell (UC) thick exfoliated crystals of a high-T cuprate superconductor BiSrCaCuO…
Nanoelectromechanical resonators from high-T superconducting crystals of BiSrCaCuO
Sudhir Kumar Sahu, Jaykumar Vaidya, Felix Schmidt +5
In this report, we present nanoelectromechanical resonators fabricated with thin exfoliated crystals of a high-T cuprate superconductor BiSrCaCuO. The m…
An optomechanical platform with a 3-dimensional waveguide cavity
Bindu Gunupudi, Soumya Ranjan Das, Rohit Navarathna +3
At low temperatures, microwave cavities are often preferred for the readout and control of a variety of systems. In this paper, we present design and measurements on an optomechani…
Multi-mode ultra-strong coupling in circuit quantum electrodynamics
Sal J. Bosman, Mario F. Gely, Vibhor Singh +3
With the introduction of superconducting circuits into the field of quantum optics, many novel experimental demonstrations of the quantum physics of an artificial atom coupled to a…
Approaching ultra-strong coupling in Transmon circuit-QED using a high-impedance resonator
Sal J. Bosman, Mario F. Gely, Vibhor Singh +3
In this experiment, we couple a superconducting Transmon qubit to a high-impedance microwave resonator. Doing so leads to a large qubit-resonator coupling rate , measur…
Mechanical dissipation in MoRe superconducting metal drums
S. Yanai, V. Singh, M. Yuan +3
We experimentally investigate dissipation in mechanical resonators made of a disordered superconducting thin film of Molybdenum-Rhenium(MoRe) alloy. By electrostatically driving th…
Negative nonlinear damping of a graphene mechanical resonator
Vibhor Singh, Olga Shevchuk, Ya. M. Blanter +1
We experimentally investigate the nonlinear response of a multilayer graphene resonator using a superconducting microwave cavity to detect its motion. The radiation pressure force…
Broadband architecture for galvanically accessible superconducting microwave resonators
Sal J. Bosman, Vibhor Singh, Alessandro Bruno +1
In many hybrid quantum systems, a superconducting circuit is required that combines DC-control with a coplanar waveguide (CPW) microwave resonator. The strategy thus far for applyi…
Optomechanical response of a non-linear mechanical resonator
Olga Shevchuk, Vibhor Singh, Gary A. Steele +1
We investigate theoretically in detail the non-linear effects in the response of an optical/microwave cavity coupled to a Duffing mechanical resonator. The cavity is driven by a la…
Large cooperativity and microkelvin cooling with a three-dimensional optomechanical cavity
Mingyun Yuan, Vibhor Singh, Yaroslav M. Blanter +1
In cavity optomechanics, light is used to control mechanical motion. A central goal of the field is achieving single-photon strong coupling, which would enable the creation of quan…
Observation of decoherence in a carbon nanotube mechanical resonator
Ben H. Schneider, Vibhor Singh, Warner J. Venstra +2
In physical systems, decoherence can arise from both dissipative and dephasing processes. In mechanical resonators, the driven frequency response measures a combination of both, wh…
Molybdenum-Rhenium alloy based high- superconducting microwave resonators
Vibhor Singh, Ben H. Schneider, Sal J. Bosman +2
Superconducting microwave resonators (SMR) with high quality factors have become an important technology in a wide range of applications. Molybdenum-Rhenium (MoRe) is a disordered…
Mechanics of freely-suspended ultrathin layered materials
Andres Castellanos-Gomez, Vibhor Singh, Herre S. J. van der Zant +1
The study of atomically thin two-dimensional materials is a young and rapidly growing field. In the past years, a great advance in the study of the remarkable electrical and optica…
Optomechanical coupling between a multilayer graphene mechanical resonator and a superconducting microwave cavity
V. Singh, S. J. Bosman, B. H. Schneider +3
The combination of low mass density, high frequency, and high quality-factor of mechanical resonators made of two-dimensional crystals such as graphene make them attractive for app…