Searched for: author%3A%22Mukhopadhyay%2C+U.%22
(1 - 13 of 13)
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Knörzer, J. (author), van Diepen, C.J. (author), Hsiao, T. (author), Giedke, G. (author), Mukhopadhyay, U. (author), Reichl, C. (author), Wegscheider, W. (author), Cirac, J. I. (author), Vandersypen, L.M.K. (author)
Long-range interactions play a key role in several phenomena of quantum physics and chemistry. To study these phenomena, analog quantum simulators provide an appealing alternative to classical numerical methods. Gate-defined quantum dots have been established as a platform for quantum simulation, but for those experiments the effect of long...
journal article 2022
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van Diepen, C.J.J. (author), Hsiao, T. (author), Mukhopadhyay, U. (author), Reichl, C. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)
Quantum-mechanical correlations of interacting fermions result in the emergence of exotic phases. Magnetic phases naturally arise in the Mott-insulator regime of the Fermi-Hubbard model, where charges are localized and the spin degree of freedom remains. In this regime, the occurrence of phenomena such as resonating valence bonds, frustrated...
journal article 2021
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van Diepen, C.J. (author), Hsiao, T. (author), Mukhopadhyay, U. (author), Reichl, Christian (author), Wegscheider, Werner (author), Vandersypen, L.M.K. (author)
The spin of a single electron in a semiconductor quantum dot provides a well-controlled and long-lived qubit implementation. The electron charge in turn allows control of the position of individual electrons in a quantum dot array, and enables charge sensors to probe the charge configuration. Here we show that the Coulomb repulsion allows an...
journal article 2021
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Dehollain Lorenzana, J.P. (author), Mukhopadhyay, U. (author), Michal, V.P. (author), Wang, Y. (author), Wunsch, B. (author), Reichl, C. (author), Wegscheider, W. (author), Rudner, M. S. (author), Demler, E. (author), Vandersypen, L.M.K. (author)
Engineered, highly controllable quantum systems are promising simulators of emergent physics beyond the simulation capabilities of classical computers<sup>1</sup>. An important problem in many-body physics is itinerant magnetism, which originates purely from long-range interactions of free electrons and whose existence in real systems has...
journal article 2020
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Hsiao, T. (author), van Diepen, C.J. (author), Mukhopadhyay, U. (author), Reichl, C. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)
Electrostatically-defined semiconductor quantum dot arrays offer a promising platform for quantum computation and quantum simulation. However, crosstalk of gate voltages to dot potentials and interdot tunnel couplings complicates the tuning of the device parameters. To date, crosstalk to the dot potentials is routinely and efficiently...
journal article 2020
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Mukhopadhyay, U. (author)
We are entering the era of the second quantum revolution, where we aim to harness the power of quantum mechanics to create new technologies. Quantum technologies have the potential to revolutionize the fields of simulation, computation, communication, sensing, metrology, and many others. Here we discuss analog quantum simulation, which has...
doctoral thesis 2019
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Wang, Yao (author), Dehollain, Juan Pablo (author), Liu, Fang (author), Mukhopadhyay, U. (author), Rudner, Mark S. (author), Vandersypen, L.M.K. (author), Demler, Eugene (author)
Recent progress of quantum simulators provides insight into the fundamental problems of strongly correlated systems. To adequately assess the accuracy of these simulators, the precise modeling of the many-body physics, with accurate model parameters, is crucially important. In this paper, we employed an ab initio exact diagonalization...
journal article 2019
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Pateras, Anastasios (author), Carnis, Jérôme (author), Mukhopadhyay, U. (author), Richard, Marie Ingrid (author), Leake, Steven J. (author), Schülli, Tobias U. (author), Reichl, Christian (author), Wegscheider, Werner (author), Dehollain Lorenzana, J.P. (author), Vandersypen, L.M.K. (author), Evans, Paul G. (author)
Increasing the number of quantum bits while preserving precise control of their quantum electronic properties is a significant challenge in materials design for the development of semiconductor quantum computing devices. Semiconductor heterostructures can host multiple quantum dots that are electrostatically defined by voltages applied to an...
journal article 2019
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Volk, C.A. (author), Zwerver, A.M.J. (author), Mukhopadhyay, U. (author), Eendebak, P.T. (author), van Diepen, C.J. (author), Dehollain Lorenzana, J.P. (author), Hensgens, T. (author), Fujita, T. (author), Vandersypen, L.M.K. (author)
Electrostatically defined quantum dot arrays offer a compelling platform for quantum computation and simulation. However, tuning up such arrays with existing techniques becomes impractical when going beyond a handful of quantum dots. Here, we present a method for systematically adding quantum dots to an array one dot at a time, in such a way...
journal article 2019
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Pateras, Anastasios (author), Park, Joonkyu (author), Ahn, Youngjun (author), Tilka, Jack A. (author), Holt, Martin V. (author), Reichl, Christian (author), Wegscheider, Werner (author), Baart, T.A. (author), Dehollain Lorenzana, J.P. (author), Mukhopadhyay, U. (author), Vandersypen, L.M.K. (author), Evans, Paul G. (author)
Quantum devices formed in high-electron-mobility semiconductor heterostructures provide a route through which quantum mechanical effects can be exploited on length scales accessible to lithography and integrated electronics. The electrostatic definition of quantum dots in semiconductor heterostructure devices intrinsically involves the...
journal article 2018
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Mukhopadhyay, U. (author), Dehollain Lorenzana, J.P. (author), Reichl, Christian (author), Wegscheider, Werner (author), Vandersypen, L.M.K. (author)
The interaction between electrons in arrays of electrostatically defined quantum dots is naturally described by a Fermi-Hubbard Hamiltonian. Moreover, the high degree of tunability of these systems makes them a powerful platform to simulate different regimes of the Hubbard model. However, most quantum dot array implementations have been...
journal article 2018
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Hensgens, T. (author), Mukhopadhyay, U. (author), Barthelemy, P.J.C. (author), Vermeulen, R.F.L. (author), Schouten, R.N. (author), Fallahi, S. (author), Gardner, G. C. (author), Reichl, C. (author), Wegscheider, W. (author), Manfra, M. J. (author), Vandersypen, L.M.K. (author)
Electrostatic confinement in semiconductors provides a flexible platform for the emulation of interacting electrons in a two-dimensional lattice, including in the presence of gauge fields. This combination offers the potential to realize a wide host of quantum phases. Capacitance spectroscopy provides a technique that allows one to directly...
journal article 2018
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van Diepen, C.J. (author), Eendebak, P.T. (author), Buijtendorp, B.T. (author), Mukhopadhyay, U. (author), Fujita, T. (author), Reichl, C. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)
Semiconductor quantum dot arrays defined electrostatically in a 2D electron gas provide a scalable platform for quantum information processing and quantum simulations. For the operation of quantum dot arrays, appropriate voltages need to be applied to the gate electrodes that define the quantum dot potential landscape. Tuning the gate...
journal article 2018
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