267 citations · 1.6k across the 36 of their papers we have counts for
28 papers · 1 filter
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…
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…
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…
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…
Deterministic transfer of two-dimensional materials by all-dry viscoelastic stamping
Andres Castellanos-Gomez, Michele Buscema, Rianda Molenaar +4
Deterministic transfer of two-dimensional crystals constitutes a crucial step towards the fabrication of heterostructures based on artificial stacking of two-dimensional materials.…
Tunable Superlattice in Graphene To Control the Number of Dirac Points
Sudipta Dubey, Vibhor Singh, Ajay K. Bhat +6
Superlattice in graphene generates extra Dirac points in the band structure and their number depends on the superlattice potential strength. Here, we have created a lateral superla…
Plasmon mode modifies the elastic response of a nanoscale charge density wave system
Shamashis Sengupta, Niveditha Samudrala, Vibhor Singh +4
The elastic response of suspended NbSe3 nanowires is studied across the charge density wave phase transition. The nanoscale dimensions of the resonator lead to a large resonant fre…
Coupling between quantum Hall state and electromechanics in suspended graphene resonator
Vibhor Singh, Bushra Irfan, Ganesh Subramanian +6
Using graphene resonator, we perform electromechanical measurements in quantum Hall regime to probe the coupling between a quantum Hall (QH) system and its mechanical motion. Mecha…
High Q electromechanics with InAs nanowire quantum dots
Hari S. Solanki, Shamashis Sengupta, Sudipta Dubey +7
In this report, we study electromechanical properties of a suspended InAs nanowire (NW) resonator. At low temperatures, the NW acts as the island of a single electron transistor (S…
Dual top gated graphene transistor in the quantum Hall regime
Ajay K. Bhat, Vibhor Singh, Sunil Patil +1
We study the effect of local modulation of charge density and carrier type in graphene field effect transistors using a double top gate geometry. The two top gates lead to the form…
Tunable thermal conductivity in defect engineered nanowires at low temperatures
Sajal Dhara, Hari S. Solanki, Arvind Pawan R. +7
We measure the thermal conductivity () of individual InAs nanowires (NWs), and find that it is 3 orders of magnitude smaller than the bulk value in the temperature range of 10 t…
Nanoscale electromechanical resonators as probes of the charge density wave transition in NbSe
Shamashis Sengupta, Hari S. Solanki, Vibhor Singh +2
We study nanoelectromechanical resonators fabricated from suspended flakes of NbSe (thickness30-50 nm) to probe charge density wave (CDW) physics at nanoscale. Variation…