Search Results - "Sillanpää, A."
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Quantum Backaction Evading Measurement of Collective Mechanical Modes
Published in Physical review letters (30-09-2016)“…The standard quantum limit constrains the precision of an oscillator position measurement. It arises from a balance between the imprecision and the quantum…”
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2
Enhancing Optomechanical Coupling via the Josephson Effect
Published in Physical review letters (23-05-2014)“…Cavity optomechanics is showing promise for studying quantum mechanics in large systems. However, the smallness of the radiation-pressure coupling is a serious…”
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3
Graphene optomechanics realized at microwave frequencies
Published in Physical review letters (11-07-2014)“…Cavity optomechanics has served as a platform for studying the interaction between light and micromechanical motion via radiation pressure. Here we observe…”
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4
Quantum mechanics-free subsystem with mechanical oscillators
Published in Science (American Association for the Advancement of Science) (07-05-2021)“…Quantum mechanics sets a limit for the precision of continuous measurement of the position of an oscillator. We show how it is possible to measure an…”
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5
Squeezing of Quantum Noise of Motion in a Micromechanical Resonator
Published in Physical review letters (11-12-2015)“…A pair of conjugate observables, such as the quadrature amplitudes of harmonic motion, have fundamental fluctuations that are bound by the Heisenberg…”
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6
Stabilized entanglement of massive mechanical oscillators
Published in Nature (London) (01-04-2018)“…Quantum entanglement is a phenomenon whereby systems cannot be described independently of each other, even though they may be separated by an arbitrarily large…”
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7
Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
Published in Nature (27-09-2007)“…As with classical information processing, a quantum information processor requires bits (qubits) that can be independently addressed and read out, long-term…”
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8
Hybrid circuit cavity quantum electrodynamics with a micromechanical resonator
Published in Nature (London) (14-02-2013)“…The properties of a quantum bit coupled to both a microwave cavity and a phonon mode in a micromechanical resonator suggest that such systems may allow for…”
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9
Low-Noise Amplification and Frequency Conversion with a Multiport Microwave Optomechanical Device
Published in Physical review. X (01-10-2016)“…High-gain amplifiers of electromagnetic signals operating near the quantum limit are crucial for quantum information systems and ultrasensitive quantum…”
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10
Optomechanical Anti-Lasing with Infinite Group Delay at a Phase Singularity
Published in Physical review letters (31-12-2021)“…Singularities which symbolize abrupt changes and exhibit extraordinary behavior are of a broad interest. We experimentally study optomechanically induced…”
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11
Coupling high-overtone bulk acoustic wave resonators via superconducting qubits
Published in Applied physics letters (25-09-2023)“…In this work, we present a device consisting of two coupled transmon qubits, each of which are coupled to an independent high-overtone bulk acoustic wave…”
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12
Microwave amplification with nanomechanical resonators
Published in Nature (London) (15-12-2011)“…Use of nanomechanical resonators has the potential to offer microwave amplification with the minimum possible added noise, namely that due to quantum…”
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13
Ground-state cooling of a mechanical oscillator by a noisy environment
Published in Nature communications (27-08-2024)“…Dissipation and the accompanying fluctuations are often seen as detrimental for quantum systems since they are associated with fast relaxation and loss of…”
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14
Quantum backaction evading measurements of a silicon nitride membrane resonator
Published in New journal of physics (01-08-2022)“…Abstract Quantum backaction disturbs the measurement of the position of a mechanical oscillator by introducing additional fluctuations. In a quantum backaction…”
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15
Multimode circuit optomechanics near the quantum limit
Published in Nature communications (07-08-2012)“…The coupling of distinct systems underlies nearly all physical phenomena. A basic instance is that of interacting harmonic oscillators, giving rise to, for…”
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16
Cavity optomechanics mediated by a quantum two-level system
Published in Nature communications (27-04-2015)“…Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of photons is a promising platform for investigations of…”
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17
Stamp Transferred Suspended Graphene Mechanical Resonators for Radio Frequency Electrical Readout
Published in Nano letters (11-01-2012)“…We present a simple micromanipulation technique to transfer suspended graphene flakes onto any substrate and to assemble them with small localized gates into…”
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18
Nonreciprocal Transport Based on Cavity Floquet Modes in Optomechanics
Published in Physical review letters (10-07-2020)“…Directional transport is obtained in various multimode systems by driving multiple, nonreciprocally interfering interactions between individual bosonic modes…”
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19
The awakening of BL Lacertae: observations by Fermi, Swift and the GASP-WEBT
Published in Monthly notices of the Royal Astronomical Society (01-12-2013)“…Since the launch of the Fermi satellite, BL Lacertae has been moderately active at γ-rays and optical frequencies until 2011 May, when the source started a…”
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The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
Published in Astroparticle physics (01-01-2016)“…MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a…”
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