Nearly quantum limited nanoSQUIDs based on cross-type Nb/AlO x /Nb junctions
Sign Up to like & getrecommendations! Published in 2017 at "Superconductor Science and Technology"
DOI: 10.1088/0953-2048/30/1/014001
Abstract: We report on the development of nearly quantum limited SQUIDs with miniature pickup loop dimensions. The implemented high quality and low capacitance cross-type Nb/AlO x /Nb Josephson junctions offer large I C R N -products… read more here.
Keywords: nearly quantum; cross type; quantum limited; type alo ... See more keywords
Demonstration of quantum-limited discrimination of multicopy pure versus mixed states
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review A"
DOI: 10.1103/physreva.105.032446
Abstract: Arunkumar Jagannathan, Michael Grace, Olivia Brasher, Jeffrey H. Shapiro, Saikat Guha, and Jonathan L. Habif 1 Information Sciences Institute, University of Southern California,Waltham, MA 02451 2 James C. Wyant College of Optical Sciences, University of… read more here.
Keywords: demonstration quantum; multicopy pure; limited discrimination; discrimination multicopy ... See more keywords
Quantum-limited measurement of spin qubits via curvature couplings to a cavity
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.245306
Abstract: We investigate coupling an encoded spin qubit to a microwave resonator via qubit energy level curvature versus gate voltage. This approach enables quantum non-demolition readout with strength of tens to hundred MHz all while the… read more here.
Keywords: measurement spin; curvature; qubit; quantum limited ... See more keywords
High-Q Milligram-Scale Monolithic Pendulum for Quantum-Limited Gravity Measurements.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.221102
Abstract: We present the development of a high-Q monolithic silica pendulum weighing 7 milligram. The measured Q value for the pendulum mode at 2.2 Hz was 2.0×10^{6}. To the best of our knowledge this is the lowest dissipative… read more here.
Keywords: gravity measurements; milligram scale; pendulum; quantum limited ... See more keywords
Quantum-Limited Squeezed Light Detection with a Camera.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.113602
Abstract: We present a technique for squeezed light detection based on direct imaging of the displaced-squeezed-vacuum state using a CCD camera. We show that the squeezing parameter can be accurately estimated using only the first two… read more here.
Keywords: limited squeezed; squeezed light; light detection; quantum limited ... See more keywords