Junior Researcher
Research Interests:
Cold atoms, Quantum computing & Simulations, Quantum communication, Quantum optics
Selected publications:
Zhang, Z; Hsu, T-W; Tan, T Y; Slichter, D H.; Kaufman, A M.; Marinelli, Matteo; Regal, C A.
High Optical Access Cryogenic System for Rydberg Atom Arrays with a 3000-Second Trap Lifetime Journal Article
In: PRX Quantum, vol. 6, no. 2, 2025, ISSN: 2691-3399.
@article{Zhang2025,
title = {High Optical Access Cryogenic System for Rydberg Atom Arrays with a 3000-Second Trap Lifetime},
author = {Z Zhang and T-W Hsu and T Y Tan and D H. Slichter and A M. Kaufman and Matteo Marinelli and C A. Regal},
doi = {10.1103/prxquantum.6.020337},
issn = {2691-3399},
year = {2025},
date = {2025-05-00},
urldate = {2025-05-00},
journal = {PRX Quantum},
volume = {6},
number = {2},
publisher = {American Physical Society (APS)},
abstract = {<jats:p>We present an optical tweezer array of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mrow/><a:mn>87</a:mn></a:msup><a:mi>Rb</a:mi></a:math> atoms housed in an cryogenic environment that successfully combines a 4-K cryopumping surface, a <50-K cold box surrounding the atoms, and a room-temperature high-numerical-aperture objective lens. We demonstrate a 3000-s atom-trap lifetime, which enables us to optimize and measure losses at the <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mn>10</c:mn><c:mrow><c:mo>−</c:mo><c:mn>4</c:mn></c:mrow></c:msup></c:math> level that arise during imaging and cooling, which are important to array rearrangement. We perform both ground-state qubit manipulation with an integrated microwave antenna and two-photon coherent Rydberg control, with the local electric field tuned to zero via integrated electrodes. We anticipate that the reduced blackbody radiation at the atoms from the cryogenic environment, combined with future electrical shielding, should decrease the rate of undesired transitions to nearby strongly interacting Rydberg states, which cause many-body loss and impede Rydberg gates. This low-vibration, high-optical-access cryogenic platform can be used with a wide range of optically trapped atomic or molecular species for applications in quantum computing, simulation, and metrology.</jats:p>},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
<jats:p>We present an optical tweezer array of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mrow/><a:mn>87</a:mn></a:msup><a:mi>Rb</a:mi></a:math> atoms housed in an cryogenic environment that successfully combines a 4-K cryopumping surface, a <50-K cold box surrounding the atoms, and a room-temperature high-numerical-aperture objective lens. We demonstrate a 3000-s atom-trap lifetime, which enables us to optimize and measure losses at the <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mn>10</c:mn><c:mrow><c:mo>−</c:mo><c:mn>4</c:mn></c:mrow></c:msup></c:math> level that arise during imaging and cooling, which are important to array rearrangement. We perform both ground-state qubit manipulation with an integrated microwave antenna and two-photon coherent Rydberg control, with the local electric field tuned to zero via integrated electrodes. We anticipate that the reduced blackbody radiation at the atoms from the cryogenic environment, combined with future electrical shielding, should decrease the rate of undesired transitions to nearby strongly interacting Rydberg states, which cause many-body loss and impede Rydberg gates. This low-vibration, high-optical-access cryogenic platform can be used with a wide range of optically trapped atomic or molecular species for applications in quantum computing, simulation, and metrology.</jats:p>
Flühmann, C.; Nguyen, T. L.; Marinelli, Matteo; Negnevitsky, V.; Mehta, K.; Home, J. P.
Encoding a qubit in a trapped-ion mechanical oscillator Journal Article
In: Nature, vol. 566, no. 7745, pp. 513–517, 2019, ISSN: 1476-4687.
@article{Flühmann2019,
title = {Encoding a qubit in a trapped-ion mechanical oscillator},
author = {C. Flühmann and T. L. Nguyen and Matteo Marinelli and V. Negnevitsky and K. Mehta and J. P. Home},
doi = {10.1038/s41586-019-0960-6},
issn = {1476-4687},
year = {2019},
date = {2019-02-28},
urldate = {2019-02-28},
journal = {Nature},
volume = {566},
number = {7745},
pages = {513--517},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Negnevitsky, V.; Marinelli, Matteo; Mehta, K. K.; Lo, H. -Y.; Flühmann, C.; Home, J. P.
Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register Journal Article
In: Nature, vol. 563, no. 7732, pp. 527–531, 2018, ISSN: 1476-4687.
@article{Negnevitsky2018,
title = {Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register},
author = {V. Negnevitsky and Matteo Marinelli and K. K. Mehta and H.-Y. Lo and C. Flühmann and J. P. Home},
doi = {10.1038/s41586-018-0668-z},
issn = {1476-4687},
year = {2018},
date = {2018-11-00},
urldate = {2018-11-00},
journal = {Nature},
volume = {563},
number = {7732},
pages = {527--531},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
de Clercq, L E.; Lo, H-Y; Marinelli, Matteo; Nadlinger, D; Oswald, R; Negnevitsky, V; Kienzler, D; Keitch, B; Home, J P.
Parallel Transport Quantum Logic Gates with Trapped Ions Journal Article
In: Phys. Rev. Lett., vol. 116, no. 8, 2016, ISSN: 1079-7114.
@article{deClercq2016,
title = {Parallel Transport Quantum Logic Gates with Trapped Ions},
author = {L E. de Clercq and H-Y Lo and Matteo Marinelli and D Nadlinger and R Oswald and V Negnevitsky and D Kienzler and B Keitch and J P. Home},
doi = {10.1103/physrevlett.116.080502},
issn = {1079-7114},
year = {2016},
date = {2016-02-00},
urldate = {2016-02-00},
journal = {Phys. Rev. Lett.},
volume = {116},
number = {8},
publisher = {American Physical Society (APS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kienzler, D.; Lo, H. -Y.; Keitch, B.; de Clercq, L.; Leupold, F.; Lindenfelser, F.; Marinelli, Matteo; Negnevitsky, V.; Home, J. P.
Quantum harmonic oscillator state synthesis by reservoir engineering Journal Article
In: Science, vol. 347, no. 6217, pp. 53–56, 2015, ISSN: 1095-9203.
@article{Kienzler2015,
title = {Quantum harmonic oscillator state synthesis by reservoir engineering},
author = {D. Kienzler and H.-Y. Lo and B. Keitch and L. de Clercq and F. Leupold and F. Lindenfelser and Matteo Marinelli and V. Negnevitsky and J. P. Home},
doi = {10.1126/science.1261033},
issn = {1095-9203},
year = {2015},
date = {2015-01-02},
urldate = {2015-01-02},
journal = {Science},
volume = {347},
number = {6217},
pages = {53--56},
publisher = {American Association for the Advancement of Science (AAAS)},
abstract = {<jats:title>Engineering a shelter for quantum protection</jats:title>
<jats:p>
In isolation, quantum states of matter can be stable entities. These states are often seen as useful when they can be made to interact in a controlled way. However, those interactions and the unavoidable interactions with their environment often correlate with decoherence and eventual loss of the quantum state. Kienzler
<jats:italic>et al.</jats:italic>
show that they can engineer the interactions between a quantum system (a trapped ion) and the environment to prepare stable quantum states. The generality of the technique implies applications for other interacting quantum systems.
</jats:p>
<jats:p>
<jats:italic>Science</jats:italic>
, this issue p.
<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6217" page="53" related-article-type="in-this-issue" vol="347" xlink:href="10.1126/science.1261033">53</jats:related-article>
</jats:p>},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
<jats:title>Engineering a shelter for quantum protection</jats:title>
<jats:p>
In isolation, quantum states of matter can be stable entities. These states are often seen as useful when they can be made to interact in a controlled way. However, those interactions and the unavoidable interactions with their environment often correlate with decoherence and eventual loss of the quantum state. Kienzler
<jats:italic>et al.</jats:italic>
show that they can engineer the interactions between a quantum system (a trapped ion) and the environment to prepare stable quantum states. The generality of the technique implies applications for other interacting quantum systems.
</jats:p>
<jats:p>
<jats:italic>Science</jats:italic>
, this issue p.
<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6217" page="53" related-article-type="in-this-issue" vol="347" xlink:href="10.1126/science.1261033">53</jats:related-article>
</jats:p>
<jats:p>
In isolation, quantum states of matter can be stable entities. These states are often seen as useful when they can be made to interact in a controlled way. However, those interactions and the unavoidable interactions with their environment often correlate with decoherence and eventual loss of the quantum state. Kienzler
<jats:italic>et al.</jats:italic>
show that they can engineer the interactions between a quantum system (a trapped ion) and the environment to prepare stable quantum states. The generality of the technique implies applications for other interacting quantum systems.
</jats:p>
<jats:p>
<jats:italic>Science</jats:italic>
, this issue p.
<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6217" page="53" related-article-type="in-this-issue" vol="347" xlink:href="10.1126/science.1261033">53</jats:related-article>
</jats:p>
Biography
He received his Ph.D. in 2020 from ETH Zurich under the supervision of Jonathan Home, where he explored the use of mixed-species chains of trapped ions to conduct proof-of-principle experiments in quantum error correction and quantum computation. From 2020 to 2022, he served as the lead experimental scientist at the newly founded ETH-PSI Quantum Computing Hub, where he designed and led the construction of the Hub’s first experimental apparatus. In 2022, he was awarded a postdoctoral fellowship from the Swiss National Science Foundation, joining JILA in Boulder, Colorado, in a joint collaboration with Adam Kaufman and Cindy Regal. At JILA, he co-supervised the construction of an innovative apparatus that integrated Rydberg atom arrays in a cryogenic environment to extend the atom lifetime and scale the system to thousands of qubits. In October 2024, he will begin a tenure-track position (RTT) at the University of Trieste, where he will establish a research group focusing on scalability challenges of neutral atoms trapped in optical tweezers, quantum communications and modular computing.