127 citations · 640 across the 20 of their papers we have counts for
20 papers
High-purity entanglement mediated by magnons despite weak coupling
Sanchar Sharma
Entangling distant spins via a shared magnonic bus typically faces a tradeoff: stronger spin-magnon coupling increases the entanglement fidelity, but also the spin decay rate. We p…
Optical signatures of quantum skyrmions
Sanchar Sharma, Christina Psaroudaki
Magnets have recently emerged as promising candidates for quantum computing, particularly using topologically-protected nanoscale spin textures. While the quantum dynamics of such…
Bosonic quantum error correction with microwave cavities for quantum repeaters
S. Siddardha Chelluri, Sanchar Sharma, Frank Schmidt +2
Long-distance quantum communication necessitates the use of quantum repeaters, which typically include highly coherent quantum memories. We provide a theoretical analysis of the se…
Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs
Tahereh Sadat Parvini, Anna-Luisa E. Romling, Sanchar Sharma +1
The optical manipulation of magnon states in antiferromagnets (AFMs) holds significant potential for advancing AFM-based computing devices. In particular, two-magnon Raman scatteri…
Magnon-mediated quantum gates for superconducting qubits
Martijn Dols, Sanchar Sharma, Lenos Bechara +3
We propose a hybrid quantum system consisting of a magnetic particle inductively coupled to two superconducting transmon qubits, where qubit-qubit interactions are mediated via mag…
Quantum tomography of magnons using Brillouin light scattering
Sanchar Sharma, Silvia Viola Kusminskiy, Victor A. S. V. Bittencourt
Quantum magnonics, an emerging field focusing on the study of magnons for quantum applications, requires precise measurement methods capable of resolving single magnons. Existing t…
A Finite-Difference Time-Domain approach for dispersive magnetic media
Jasmin Graf, Joshua Baxter, Sanchar Sharma +2
We extend the Finite-Difference Time-Domain method to treat dispersive magnetic media by incorporating magneto-optical effects through a frequency-dependent permittivity tensor. Fo…
Quantum sensing of electric field distributions of liquid electrolytes with NV-centers in nanodiamonds
M. Hollendonner, S. Sharma, D. B. R. Dasari +3
To use batteries as large-scale energy storage systems it is necessary to measure and understand their degradation \textit{in-situ} and \textit{in-operando}. As a battery's degrada…
Protocol for generating an arbitrary quantum state of the magnetization in cavity magnonics
Sanchar Sharma, Victor A. S. V. Bittencourt, Silvia Viola Kusminskiy
We propose and numerically evaluate a protocol to generate an arbitrary quantum state of the magnetization in a magnet. The protocol involves repeatedly exciting a frequency-tunabl…
Optical signatures of the coupled spin-mechanics of a levitated magnetic microparticle
Vanessa Wachter, Victor A. S. V. Bittencourt, Shangran Xie +5
We propose a platform that combines the fields of cavity optomagnonics and levitated optomechanics in order to control and probe the coupled spin-mechanics of magnetic dielectric p…
Design of an optomagnonic crystal: towards optimal magnon-photon mode matching at the microscale
Jasmin Graf, Sanchar Sharma, Hans Huebl +1
We put forward the concept of an optomagnonic crystal: a periodically patterned structure at the microscale based on a magnetic dielectric, which can co-localize magnon and photon…
Spin cat states in a ferromagnetic insulator
Sanchar Sharma, Victor A. S. V. Bittencourt, Alexy D. Karenowska +1
Generating non-classical states in macroscopic systems is a long standing challenge. A promising platform in the context of this quest are novel hybrid systems based on magnetic di…
Coherent pumping of high momentum magnons by light
Fran Šimić, Sanchar Sharma, Yaroslav M. Blanter +1
We propose to excite a large number of coherent magnons with high momentum in optical cavities. This is achieved by two counterpropagating optical modes that are detuned by the fre…
Chiral coupling of magnons in waveguides
Tao Yu, Xiang Zhang, Sanchar Sharma +2
We theoretically investigate the collective excitation of multiple (sub)millimeter-sized ferromagnets mediated by waveguide photons. By the position of the magnets in the waveguide…
Magnon Accumulation in Chirally Coupled Magnets
Tao Yu, Yu-Xiang Zhang, Sanchar Sharma +2
We report strong chiral coupling between magnons and photons in microwave waveguides that contain chains of small magnets on special lines. Large magnon accumulations at one edge o…
Optimal mode matching in cavity optomagnonics
Sanchar Sharma, Babak Zare Rameshti, Yaroslav M. Blanter +1
Inelastic scattering of photons is a promising technique to manipulate magnons but it suffers from weak intrinsic coupling. We theoretically discuss an idea to increase optomagnoni…
Surface dynamics of rough magnetic films
Tao Yu, Sanchar Sharma, Yaroslav M. Blanter +1
The chirality of Damon-Eshbach (DE) magnons affects the transport of energy and angular momentum at the surface of magnetic films and spheres. We calculate the surface-disorder-lim…
Optical cooling of magnons
Sanchar Sharma, Yaroslav M. Blanter, Gerrit E. W. Bauer
Inelastic scattering of light by spin waves generates an energy flow between the light and magnetization fields, a process that can be enhanced and controlled by concentrating the…
Light scattering by magnons in whispering gallery mode cavities
Sanchar Sharma, Yaroslav M. Blanter, Gerrit E. W. Bauer
Brillouin light scattering is an established technique to study magnons, the elementary excitations of a magnet. Its efficiency can be enhanced by cavities that concentrate the lig…
Proposal for a Domain Wall Nano-Oscillator driven by Non-uniform Spin Currents
Sanchar Sharma, Bhaskaran Muralidharan, Ashwin Tulapurkar
We propose a new mechanism and a related device concept for a robust, magnetic field tunable radio-frequency (rf) oscillator using the self oscillation of a magnetic domain wall su…