Search Results - "Gronberg, Leif"

Qubit Measurement by Multichannel Driving by Ikonen, Joni, Goetz, Jan, Ilves, Jesper, Keränen, Aarne, Gunyho, Andras M, Partanen, Matti, Tan, Kuan Y, Hazra, Dibyendu, Grönberg, Leif, Vesterinen, Visa, Simbierowicz, Slawomir, Hassel, Juha, Möttönen, Mikko

“…We theoretically propose and experimentally implement a method of measuring a qubit by driving it close to the frequency of a dispersively coupled bosonic…”
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A low-noise on-chip coherent microwave source by Yan, Chengyu, Hassel, Juha, Vesterinen, Visa, Zhang, Jinli, Ikonen, Joni, Grönberg, Leif, Goetz, Jan, Möttönen, Mikko

“…The scaling up of quantum computers operating in the microwave domain requires advanced control electronics, and the use of integrated components that operate…”
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Photon-number-dependent effective Lamb shift by Viitanen, Arto, Silveri, Matti, Jenei, Máté, Sevriuk, Vasilii, Tan, Kuan Y., Partanen, Matti, Goetz, Jan, Grönberg, Leif, Vadimov, Vasilii, Lahtinen, Valtteri, Möttönen, Mikko

“…The Lamb shift, an energy shift arising from the presence of the electromagnetic vacuum, has been observed in various quantum systems and established as part…”
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Nanobolometer with ultralow noise equivalent power by Kokkoniemi, Roope, Govenius, Joonas, Vesterinen, Visa, Lake, Russell E., Gunyhó, András M., Tan, Kuan Y., Simbierowicz, Slawomir, Grönberg, Leif, Lehtinen, Janne, Prunnila, Mika, Hassel, Juha, Lamminen, Antti, Saira, Olli-Pentti, Möttönen, Mikko

“…Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer electronics,…”
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Signal Crosstalk in a Flip-Chip Quantum Processor by Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Rehammar, Robert, Caputo, Marco, Grönberg, Leif, Fernández-Pendás, Jorge, Kockum, Anton Frisk, Biznárová, Janka, Chen, Liangyu, Križan, Christian, Nylander, Andreas, Osman, Amr, Roudsari, Anita Fadavi, Shiri, Daryoush, Tancredi, Giovanna, Govenius, Joonas, Bylander, Jonas

“…Quantum processors require a signal-delivery architecture with high addressability (low crosstalk) to ensure high performance already at the scale of dozens of…”
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Experimentally Verified, Fast Analytic and Numerical Design of Superconducting Resonators in Flip-Chip Architectures by Li, Hang-Xi, Shiri, Daryoush, Kosen, Sandoko, Rommel, Marcus, Chayanun, Lert, Nylander, Andreas, Rehammar, Robert, Tancredi, Giovanna, Caputo, Marco, Grigoras, Kestutis, Gronberg, Leif, Govenius, Joonas, Bylander, Jonas

“…In superconducting quantum processors, the predictability of device parameters is of increasing importance as many labs scale up their systems to larger sizes…”
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Thermionic junction devices utilizing phonon blocking by Mykkänen, Emma, Lehtinen, Janne S, Grönberg, Leif, Shchepetov, Andrey, Timofeev, Andrey V, Gunnarsson, David, Kemppinen, Antti, Manninen, Antti J, Prunnila, Mika

“…Electrothermal elements are used in various energy harvesters, coolers, and radiation detectors. The optimal operation of these elements relies on mastering…”
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A Multiloop SQUID and a SQUID Array With 1-μm and Submicrometer Input Coils by KIVIRANTA, Mikko, GRÖNBERG, Leif, HASSEL, Juha

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Components for Multiplexed dc-SQUID Readouts of Transition Edge Sensor Arrays by Kiviranta, Mikko, Gronberg, Leif

“…A SQUID tandem is a two-stage amplifier consisting of the front end SQUID at T << 1 K and the booster SQUID at T ∼ 4 K. We give an overview of the dc SQUID…”
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Broadband Lamb shift in an engineered quantum system by Silveri, Matti, Masuda, Shumpei, Sevriuk, Vasilii, Tan, Kuan Y., Jenei, Máté, Hyyppä, Eric, Hassler, Fabian, Partanen, Matti, Goetz, Jan, Lake, Russell E., Grönberg, Leif, Möttönen, Mikko

“…The shift of the energy levels of a quantum system owing to broadband electromagnetic vacuum fluctuations—the Lamb shift—has been central for the development…”
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Kinetic inductance magnetometer by Luomahaara, Juho, Vesterinen, Visa, Grönberg, Leif, Hassel, Juha

“…Sensing ultra-low magnetic fields has various applications in the fields of science, medicine and industry. There is a growing need for a sensor that can be…”
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Large 256-Pixel X-ray Transition-Edge Sensor Arrays With Mo/TiW/Cu Trilayers by Palosaari, Mikko R. J., Gronberg, Leif, Kinnunen, Kimmo M., Gunnarsson, David, Prunnila, Mika, Maasilta, Ilari J.

“…We describe the fabrication and electrical characterization of 256-pixel X-ray transition-edge sensor (TES) arrays intended for materials analysis…”
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Conformal titanium nitride in a porous silicon matrix: A nanomaterial for in-chip supercapacitors by Grigoras, Kestutis, Keskinen, Jari, Grönberg, Leif, Yli-Rantala, Elina, Laakso, Sampo, Välimäki, Hannu, Kauranen, Pertti, Ahopelto, Jouni, Prunnila, Mika

“…Today's supercapacitor energy storages are typically discrete devices aimed for printed boards and power applications. The development of autonomous sensor…”
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Two-Stage SQUID Amplifier for the Frequency Multiplexed Readout of the X-IFU X-Ray Camera by Kiviranta, Mikko, Gronberg, Leif, Puranen, Tuomas, van der Kuur, Jan, Beev, Nikolai, Salonen, Jaakko, Hazra, Dibyendu, Korpela, Seppo

“…The X-ray Integral Field Unit (X-IFU) is a cryogenic X-ray camera intended for the ATHENA space observatory. Its focal plane will contain a kilopixel array of…”
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Broadband tunable phase shifter for microwaves by Zhang, Jinli, Li, Tianyi, Kokkoniemi, Roope, Yan, Chengyu, Liu, Wei, Partanen, Matti, Tan, Kuan Yen, He, Ming, Ji, Lu, Grönberg, Leif, Möttönen, Mikko

“…We implement a broadly tunable phase shifter for microwaves based on superconducting quantum interference devices (SQUIDs) and study it both experimentally and…”
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Fabrication Process for RSFQ/Qubit Systems by Gronberg, L., Hassel, J., Helisto, P., Ylilammi, M.

“…We have developed a Nb/Al/AlO x /Nb trilayer process aimed towards integration of RSFQ and qubit circuits. The emphasis is to provide a process enabling RSFQ…”
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Unshielded SQUID Sensors for Ultra-Low-Field Magnetic Resonance Imaging by Luomahaara, Juho, Kiviranta, Mikko, Gronberg, Leif, Zevenhoven, Koos C. J., Laine, Petteri

“…We have implemented a new field-tolerant low-critical-temperature superconducting quantum interference device current sensor with submicrometer Josephson…”
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Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier by Chen, Liangyu, Li, Hang-Xi, Lu, Yong, Warren, Christopher W., Križan, Christian J., Kosen, Sandoko, Rommel, Marcus, Ahmed, Shahnawaz, Osman, Amr, Biznárová, Janka, Fadavi Roudsari, Anita, Lienhard, Benjamin, Caputo, Marco, Grigoras, Kestutis, Grönberg, Leif, Govenius, Joonas, Kockum, Anton Frisk, Delsing, Per, Bylander, Jonas, Tancredi, Giovanna

“…High-fidelity and rapid readout of a qubit state is key to quantum computing and communication, and it is a prerequisite for quantum error correction. We…”
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NbN Vacuum Bridge Bolometer Arrays With Room Temperature Readout Approaching Photon Noise Limited THz Imaging Applications by Helisto, P., Penttila, J.S., Sipola, H., Gronberg, L., Maibaum, F., Luukanen, A., Seppa, H.

“…We study the applicability of superconducting NbN vacuum bridge bolometer arrays with room temperature readout electronics to passive THz imaging applications…”
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Author Correction: Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier by Chen, Liangyu, Li, Hang-Xi, Lu, Yong, Warren, Christopher W., Križan, Christian J., Kosen, Sandoko, Rommel, Marcus, Ahmed, Shahnawaz, Osman, Amr, Biznárová, Janka, Fadavi Roudsari, Anita, Lienhard, Benjamin, Caputo, Marco, Grigoras, Kestutis, Grönberg, Leif, Govenius, Joonas, Kockum, Anton Frisk, Delsing, Per, Bylander, Jonas, Tancredi, Giovanna

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