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15 papers · 2 filters
Speeding up adiabatic quantum state transfer by using dressed states
Alexandre Baksic, Hugo Ribeiro, Aashish A. Clerk
We develop new pulse schemes to significantly speed up adiabatic state transfer protocols. Our general strategy involves adding corrections to an initial control Hamiltonian which…
Dual gate black phosphorus velocity modulated transistor
V. Tayari, N. Hemsworth, O. Cyr-Choinière +3
The layered semiconductor black phosphorus has attracted attention as a 2D atomic crystal that can be prepared in ultra-thin layers for operation as field effect transistors. Despi…
Ultralow-Noise SiN Trampoline Resonators for Sensing and Optomechanics
Christoph Reinhardt, Tina Müller, Alexandre Bourassa +1
In force sensing, optomechanics, and quantum motion experiments, it is typically advantageous to create lightweight, compliant mechanical elements with the lowest possible force no…
Measurement of Topological Berry Phase in Highly Disordered Graphene
K. Bennaceur, J. Guillemette, P. L. Lévesque +12
We have observed the quantum Hall effect (QHE) and Shubnikov-de Haas (SdH) oscillations in highly disordered graphene at magnetic fields up to 65 T. Disorder was introduced by hydr…
Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product
Tanay Roy, Suman Kundu, Madhavi Chand +7
We present an impedance engineered Josephson parametric amplifier capable of providing bandwidth beyond the traditional gain-bandwidth product. We achieve this by introducing a pos…
Negative Full Counting Statistics Arise From Interference Effects
Patrick P. Hofer, Aashish A. Clerk
The Keldysh-ordered full counting statistics is a quasi-probability distribution describing the fluctuations of a time-integrated quantum observable. While it is well known that th…