A5027449253- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Force Microscopy Techniques and Applications
- Advanced MEMS and NEMS Technologies
- DNA and Nucleic Acid Chemistry
- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Advanced Fiber Laser Technologies
- Chemical Synthesis and Analysis
- Diamond and Carbon-based Materials Research
- Neural Networks and Reservoir Computing
- Crystallization and Solubility Studies
- Advanced biosensing and bioanalysis techniques
- X-ray Diffraction in Crystallography
- Experimental and Theoretical Physics Studies
- RNA Interference and Gene Delivery
- Advanced Thermodynamics and Statistical Mechanics
- Crystal structures of chemical compounds
- Synthesis and Biological Evaluation
- Synthesis and Reactions of Organic Compounds
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Synthesis and Characterization of Heterocyclic Compounds
- Fluorine in Organic Chemistry
- Synthesis and Properties of Aromatic Compounds
Delft University of Technology
2021-2024
QuTech
2021-2024
Kavli Energy NanoScience Institute
2024
University of Montana
2012-2022
Deutsche Nationalbibliothek
2019
University of California, Santa Barbara
2015-2018
Leiden University
2016
Massachusetts Institute of Technology
2012
Saint Joseph's University
2009
This paper presents photonic devices with 3 dB/cm waveguide loss fabricated in an existing commercial electronic 45 nm SOI-CMOS foundry process. By utilizing front-end fabrication processes the are monolithically integrated electronics same physical device layer as transistors achieving 4 ps logic stage delay, without degradation transistor performance. We demonstrate 8-channel optical microring-resonator filter bank and modulators, both controlled by digital circuits. developing a design...
The nitrogen-vacancy (NV) center in diamond has been established as a prime building block for quantum networks. However, scaling beyond few network nodes is currently limited by low spin-photon entanglement rates, resulting from the NV center's probability of coherent photon emission and collection. Integration into cavity can boost both values via Purcell effect, but poor optical coherence near-surface centers so far prevented their resonant control, would be required generation. Here, we...
Hybrid quantum systems have been developed with various mechanical, optical and microwave harmonic oscillators. The coupling produces a rich library of interactions including two mode squeezing, swapping interactions, back-action evasion thermal control. In multimode mechanical system, resonators different scales (both in frequency mass) leverages the advantages each resonance. For example: high frequency, easily manipulated resonator could be entangled low massive object for tests...
Efficient coupling of optically active qubits to optical cavities is a key challenge for solid-state-based quantum optics experiments and future technologies. Here we present photonic interface based on single tin-vacancy center in micrometer-thin diamond membrane coupled tunable open microcavity. We use the full tunability microcavity selectively address individual centers within cavity mode volume. Purcell enhancement transition evidenced both by excited state lifetime reduction linewidth...
For experimental investigations of macroscopic quantum superpositions and the possible role gravitational effects on reduction corresponding wave function it is beneficial to consider large mass, low frequency optomechanical systems. We report optical side-band cooling from room temperature for a 1.5×10⁻¹⁰ kg (mode mass), resolved system based 5 cm long Fabry-Perot cavity. By using high-quality Bragg mirrors both stationary micromechanical mirror we are able construct an cavity with...
Two major challenges in the development of optomechanical devices are achieving a low mechanical and optical loss rate vibration isolation from environment. We address both issues by fabricating trampoline resonators made pressure chemical vapor deposition Si3N4 with distributed Bragg reflector mirror. design nested double resonator structure 80 dB mounting surface at inner frequency, we demonstrate up to 45 lower frequencies agreement design. reliably fabricate quality factors around 400...
We demonstrate experimental exploration of the attractor diagram an optomechanical system where optical forces compensate for mechanical losses. In this case stable self-induced oscillations occur but only specific mirror amplitudes and laser detunings. that we can amplify mode to amplitude 500 times larger than thermal at 300 K. The lack unstable or chaotic motion allows us manipulate our into a nontrivial steady state explore dynamics in great detail.
A method to measure decoherence in an optomechanical system is developed. The scheme overcomes previous limitations, promising a route observe the quantum classical transition macroscopic systems.
We demonstrate 8.5 dB thermal squeezing of a membrane oscillator using the dynamical backaction effect and electrostatic feedback in an optomechanical membrane-in-the-middle setup. show that strong can be obtained even far-detuning regime sideband-resolved system. By dielectrophoretic force metallic needle kept close proximity to membrane, we implement one-quadrature active scheme prevent divergence amplified quadrature surpass 3 limit mechanical squeezing. also discuss different regions...
Cryogenic systems will soon limit the scalability of superconducting qubit processors. To alleviate this bottleneck different control and readout methods are required. We demonstrate optical a transmon using piezo-optomechanical transducer.
Abstract We report on a quantum interface linking diamond NV center network node and 795nm photonic time-bin qubits compatible with Thulium Rubidium memories. The makes use of two-stage low-noise frequency conversion waveform shaping to match temporal spectral photon profiles. Two-photon interference shows high indistinguishability between converted photons the native photons. demonstrate teleportation including real-time feedforward from an unbiased set qubit input states spin qubit,...
In a Fabry–Perot cavity optomechanical system the mechanical mode can be excited by placing laser at blue sideband of resonance. As soon as optical driving force overcomes losses, self-induced oscillations start to occur. When trying achieve large parametric amplification in most experiments these cross over into chaotic motion due secondary effects such heating mirror absorption. Here we demonstrate an which amplitude greatly amplified use low-absorption Bragg on oscillator. By scanning...
Experiments in the field of optomechanics do not yet fully exploit photon polarization degree freedom. Here experimental results for an optomechanical interaction a nondegenerate system are presented and schemes proposed how to use this perform accurate side-band thermometry create novel forms photon-phonon entanglement. The utilizes compressive force mirror attached mechanical resonator micro-mirror with two radii curvature which leads, when combined second mirror, significant splitting...
We demonstrate a simple method to measure optomechanically induced transparency (OMIT) in Fabry-Perot based system using trampoline resonator. In OMIT, the transmitted intensity of weak probe beam presence strong control is modified via optomechanical interaction, leading an ultra-narrow optical resonance. To retrieve both magnitude and phase beam, homodyne detection technique typically used. have greatly simplified this by single acousto-optical modulator create two beams. The beat signal...
By requiring zero process changes and by complying with established electronic circuit design rules, photonic devices formed 3dB/cm waveguides were fabricated alongside transistors achieving 4ps stage delay in a 45nm thin-SOI CMOS foundry.
In the title compound, C21H16BrNO3, mean planes of anthracene tricycle and isoxazole ring are inclined to each other at a dihedral angle 72.12 (7)°. The carb-oxy group is slightly out plane, with maximum deviation 0.070 (5) Å for carbonyl O atom. crystal, pairs weak C-H⋯O hydrogen bonds link mol-ecules into dimers, C-H⋯N inter-actions further these dimers corrugated layers parallel bc plane.
Experiments involving micro- and nanomechanical resonators need to be carefully designed reduce mechanical environmental noise. A small scale on-chip approach is add an additional resonator the system as a low-pass filter. Unfortunately, inherent low frequency of filter causes easily excited mechanically. Fixating ensures that itself can not by environment. This, however, negates purpose We solve this apparent paradox applying active feedback resonator, thereby minimizing motion with respect...
Microwave-to-optics transduction is emerging as a vital technology for scaling quantum computers and networks. To establish useful entanglement links between qubit processing units, several key conditions have to be simultaneously met: the transducer must add less than single of input referred noise operate with high-efficiency, well large bandwidth high repetition rate. Here we present new design an integrated based on planar superconducting resonator coupled silicon photonic cavity through...