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Mechanical overtone frequency combs

de Jong, M.H.J. (author), Ganesan, Adarsh (author), Cupertino, A. (author), Groeblacher, S. (author), Norte, R.A. (author)

Mechanical frequency combs are poised to bring the applications and utility of optical frequency combs into the mechanical domain. So far, their main challenge has been strict requirements on drive frequencies and power, which complicate operation. We demonstrate a straightforward mechanism to create a frequency comb consisting of mechanical...

journal article 2023

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Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime

Luschmann, Thomas (author), Jung, Alexander (author), Geprägs, Stephan (author), Haslbeck, Franz X. (author), Marx, Achim (author), Filipp, Stefan (author), Groeblacher, S. (author), Gross, Rudolf (author), Huebl, Hans (author)

Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films have become commercially available. Here, we present a systematic low-temperature study of the performance of SAW devices fabricated on LNO-on...

journal article 2023

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Frequency Tunable, Cavity-Enhanced Single Erbium Quantum Emitter in the Telecom Band

Yu, Y. (author), Oser, D.J.H. (author), Da Prato, G. (author), Urbinati, E. (author), Ávila, Javier Carrasco (author), Zhang, Y. (author), Remy, Patrick (author), Marzban, S. (author), Groeblacher, S. (author), Tittel, W. (author)

Single quantum emitters embedded in solid-state hosts are an ideal platform for realizing quantum information processors and quantum network nodes. Among the currently investigated candidates, Er3+ ions are particularly appealing due to their 1.5 μm optical transition in the telecom band as well as their long spin coherence times. However,...

journal article 2023

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Quadrature-Resolved Dissipative Optomechanical Measurement

Pinho, Pedro V. (author), Primo, Andre G. (author), Carvalho, Natalia C. (author), Benevides, Rodrigo (author), Kersul, Caue M. (author), Groeblacher, S. (author), Wiedehecker, Gustavo S. (author), Mayer Alegre, Thiago P. (author)

We present a homodyne detection scheme to reliably measure the dissipative coupling in optomechanical systems. Our method is validated on silicon devices yielding GK_e/GΩ= -0.007 ± 0.001.

conference paper 2023

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High-Quality Amorphous Silicon Carbide for Hybrid Photonic Integration Deposited at a Low Temperature

Lopez Rodriguez, B. (author), van der Kolk, R.J.H. (author), Aggarwal, Samarth (author), Sharma, N. (author), Li, Z.Z.L. (author), van der Plaats, D.W. (author), Scholte, T.C. (author), Chang, J. (author), Groeblacher, S. (author), Pereira, S.F. (author), Bhaskaran, Harish (author), Esmaeil Zadeh, I.Z. (author)

Integrated photonic platforms have proliferated in recent years, each demonstrating its unique strengths and shortcomings. Given the processing incompatibilities of different platforms, a formidable challenge in the field of integrated photonics still remains for combining the strengths of different optical materials in one hybrid integrated...

journal article 2023

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Recent advances in metasurface design and quantum optics applications with machine learning, physics-informed neural networks, and topology optimization methods

Ji, W. (author), Chang, J. (author), Xu, He Xiu (author), Gao, J.R. (author), Groeblacher, S. (author), Urbach, Paul (author), Adam, A.J.L. (author)

As a two-dimensional planar material with low depth profile, a metasurface can generate non-classical phase distributions for the transmitted and reflected electromagnetic waves at its interface. Thus, it offers more flexibility to control the wave front. A traditional metasurface design process mainly adopts the forward prediction algorithm,...

review 2023

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A Fiber-Coupled Scanning Magnetometer with Nitrogen-Vacancy Spins in a Diamond Nanobeam

Li, Y. (author), Gerritsma, F.A. (author), Kurdi, S. (author), Codreanu, N. (author), Groeblacher, S. (author), Hanson, R. (author), Norte, R.A. (author), van der Sar, T. (author)

Magnetic imaging with nitrogen-vacancy (NV) spins in diamond is becoming an established tool for studying nanoscale physics in condensed matter systems. However, the optical access required for NV spin readout remains an important hurdle for operation in challenging environments such as millikelvin cryostats or biological systems. Here, we...

journal article 2023

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Silicon anisotropy in a bi-dimensional optomechanical cavity

Kersul, Cauê M. (author), Benevides, Rodrigo (author), Moraes, Flávio (author), de Aguiar, Gabriel H.M. (author), Wallucks, A. (author), Groeblacher, S. (author), Wiederhecker, Gustavo S. (author), Mayer Alegre, Thiago P. (author)

In this work, we study the effects of mechanical anisotropy in a 2D optomechanical crystal geometry. We fabricate and measure devices with different orientations, showing the dependence of the mechanical spectrum and the optomechanical coupling on the relative angle of the device to the crystallography directions of silicon. Our results show...

journal article 2023

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Active-feedback quantum control of an integrated low-frequency mechanical resonator

Guo, J. (author), Chang, J. (author), Yao, X. (author), Groeblacher, S. (author)

Preparing a massive mechanical resonator in a state with quantum limited motional energy provides a promising platform for studying fundamental physics with macroscopic systems and allows to realize a variety of applications, including precise sensing. While several demonstrations of such ground-state cooled systems have been achieved, in...

journal article 2023

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Dissipative optomechanics in high-frequency nanomechanical resonators

Primo, André G. (author), Pinho, Pedro V. (author), Benevides, Rodrigo (author), Groeblacher, S. (author), Wiederhecker, Gustavo S. (author), Alegre, Thiago P.Mayer (author)

The coherent transduction of information between microwave and optical domains is a fundamental building block for future quantum networks. A promising way to bridge these widely different frequencies is using high-frequency nanomechanical resonators interacting with low-loss optical modes. State-of-the-art optomechanical devices rely on...

journal article 2023

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Microwave-Optics Entanglement Via Cavity Optomagnomechanics

Fan, Zhi Yuan (author), Qiu, Liu (author), Groeblacher, S. (author), Li, Jie (author)

Microwave-optics entanglement is a vital component for building hybrid quantum networks. Here, a new mechanism for preparing stationary entanglement between microwave and optical cavity fields in a cavity optomagnomechanical system is proposed. It consists of a magnon mode in a ferrimagnetic crystal that couples directly to a microwave cavity...

journal article 2023

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High-Frequency Dissipative Optomechanics

Primo, Andre G. (author), Pinho, Pedro V. (author), Benevides, Rodrigo (author), Groeblacher, S. (author), Wiederhecker, Gustavo S. (author), Alegre, Thiago P.M. (author)

We demonstrate dissipative optomechanical transduction and backaction in coupled nanobeams. Compared to previous demonstrations, our system corresponds to a hundredfold increase in mechanical frequency and displays a record-high dissipative optomechanical coupling.

conference paper 2023

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Coherent mechanical noise cancellation and cooperativity competition in optomechanical arrays

de Jong, M.H.J. (author), Li, J. (author), Gartner, C.M. (author), Norte, R.A. (author), Groeblacher, S. (author)

Studying the interplay between multiple coupled mechanical resonators is a promising new direction in the field of optomechanics. Understanding the dynamics of the interaction can lead to rich new effects, such as enhanced coupling and multi-body physics. In particular, multi-resonator optomechanical systems allow for distinct dynamical...

journal article 2022

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Mechanical dissipation by substrate–mode coupling in SiN resonators

de Jong, M.H.J. (author), ten Wolde, M.A. (author), Cupertino, A. (author), Groeblacher, S. (author), Steeneken, P.G. (author), Norte, R.A. (author)

State-of-the-art nanomechanical resonators are heralded as a central component for next-generation clocks, filters, resonant sensors, and quantum technologies. To practically build these technologies will require monolithic integration of microchips, resonators, and readout systems. While it is widely seen that mounting microchip substrates into...

journal article 2022

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Integrated optical-readout of a high-Q mechanical out-of-plane mode

Guo, J. (author), Groeblacher, S. (author)

The rapid development of high-Q_M macroscopic mechanical resonators has enabled great advances in optomechanics. Further improvements could allow for quantum-limited or quantum-enhanced applications at ambient temperature. Some of the remaining challenges include the integration of high-Q_M structures on a chip, while...

journal article 2022

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Non-classical mechanical states guided in a phononic waveguide

Zivari, A. (author), Stockill, R.H.J. (author), Fiaschi, N. (author), Groeblacher, S. (author)

The ability to create, manipulate and detect non-classical states of light has been key for many recent achievements in quantum physics and for developing quantum technologies. Achieving the same level of control over phonons, the quanta of vibrations, could have a similar impact, in particular on the fields of quantum sensing and quantum...

journal article 2022

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Ultra-low-noise microwave to optics conversion in gallium phosphide

Stockill, Robert (author), Forsch, M. (author), Hijazi, Frederick (author), Beaudoin, Grégoire (author), Pantzas, Konstantinos (author), Sagnes, Isabelle (author), Braive, Rémy (author), Groeblacher, S. (author)

Mechanical resonators can act as excellent intermediaries to interface single photons in the microwave and optical domains due to their high quality factors. Nevertheless, the optical pump required to overcome the large energy difference between the frequencies can add significant noise to the transduced signal. Here we exploit the remarkable...

journal article 2022

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On-chip distribution of quantum information using traveling phonons

Zivari, A. (author), Fiaschi, N. (author), Burgwal, Roel (author), Verhagen, Ewold (author), Stockill, Robert (author), Groeblacher, S. (author)

Distributing quantum entanglement on a chip is a crucial step toward realizing scalable quantum processors. Using traveling phonons-quantized guided mechanical wave packets-as a medium to transmit quantum states is now gaining substantial attention due to their small size and low propagation speed compared to other carriers, such as electrons...

journal article 2022

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Coherent feedback in optomechanical systems in the sideband-unresolved regime

Guo, J. (author), Groeblacher, S. (author)

Preparing macroscopic mechanical resonators close to their motional quantum groundstate and generating entanglement with light offers great opportunities in studying fundamental physics and in developing a new generation of quantum applications. Here we propose an experimentally interesting scheme, which is particularly well suited for...

working paper 2022

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Hybrid Integration of Silicon Photonic Devices on Lithium Niobate for Optomechanical Wavelength Conversion

Marinković, Igor (author), Drimmer, Maxwell (author), Hensen, B.J. (author), Groeblacher, S. (author)

The rapid development of quantum information processors has accelerated the demand for technologies that enable quantum networking. One promising approach uses mechanical resonators as an intermediary between microwave and optical fields. Signals from a superconducting, topological, or spin qubit processor can then be converted coherently to...

journal article 2021