The Experts below are selected from a list of 2778 Experts worldwide ranked by ideXlab platform
Brando Perez Esparza - One of the best experts on this subject based on the ideXlab platform.
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a scalable cryo cmos controller for the wideband frequency multiplexed control of spin qubits and transmons
IEEE Journal of Solid-state Circuits, 2020Co-Authors: Jeroen P G Van Dijk, Bishnu Patra, Sushil Subramanian, Xiao Xue, Nodar Samkharadze, Andrea Corna, Charles Jeon, Farhana Sheikh, Esdras Juarezhernandez, Brando Perez EsparzaAbstract:Building a large-scale quantum computer requires the co-optimization of both the quantum bits (qubits) and their control electronics. By operating the CMOS control circuits at cryogenic temperatures (cryo-CMOS), and hence in close proximity to the cryogenic solid-state qubits, a compact quantum-computing system can be achieved, thus promising scalability to the large number of qubits required in a practical application. This work presents a cryo-CMOS microwave signal generator for frequency-multiplexed control of $4\times 32$ qubits (32 qubits per RF output). A Digitally intensive architecture offering full programmability of phase, amplitude, and frequency of the output microwave pulses and a wideband RF front end operating from 2 to 20 GHz allow targeting both spin qubits and transmons. The controller comprises a qubit-phase-tracking Direct Digital Synthesis (DDS) back end for coherent qubit control and a single-sideband (SSB) RF front end optimized for minimum leakage between the qubit channels. Fabricated in Intel 22-nm FinFET technology, it achieves a 48-dB SNR and 45-dB spurious-free dynamic range (SFDR) in a 1-GHz data bandwidth when operating at 3 K, thus enabling high-fidelity qubit control. By exploiting the on-chip 4096-instruction memory, the capability to translate quantum algorithms to microwave signals has been demonstrated by coherently controlling a spin qubit at both 14 and 18 GHz.
Jeroen P G Van Dijk - One of the best experts on this subject based on the ideXlab platform.
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a scalable cryo cmos controller for the wideband frequency multiplexed control of spin qubits and transmons
IEEE Journal of Solid-state Circuits, 2020Co-Authors: Jeroen P G Van Dijk, Bishnu Patra, Sushil Subramanian, Xiao Xue, Nodar Samkharadze, Andrea Corna, Charles Jeon, Farhana Sheikh, Esdras Juarezhernandez, Brando Perez EsparzaAbstract:Building a large-scale quantum computer requires the co-optimization of both the quantum bits (qubits) and their control electronics. By operating the CMOS control circuits at cryogenic temperatures (cryo-CMOS), and hence in close proximity to the cryogenic solid-state qubits, a compact quantum-computing system can be achieved, thus promising scalability to the large number of qubits required in a practical application. This work presents a cryo-CMOS microwave signal generator for frequency-multiplexed control of $4\times 32$ qubits (32 qubits per RF output). A Digitally intensive architecture offering full programmability of phase, amplitude, and frequency of the output microwave pulses and a wideband RF front end operating from 2 to 20 GHz allow targeting both spin qubits and transmons. The controller comprises a qubit-phase-tracking Direct Digital Synthesis (DDS) back end for coherent qubit control and a single-sideband (SSB) RF front end optimized for minimum leakage between the qubit channels. Fabricated in Intel 22-nm FinFET technology, it achieves a 48-dB SNR and 45-dB spurious-free dynamic range (SFDR) in a 1-GHz data bandwidth when operating at 3 K, thus enabling high-fidelity qubit control. By exploiting the on-chip 4096-instruction memory, the capability to translate quantum algorithms to microwave signals has been demonstrated by coherently controlling a spin qubit at both 14 and 18 GHz.
Niels Kjaergaard - One of the best experts on this subject based on the ideXlab platform.
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a three dimensional steerable optical tweezer system for ultracold atoms
Review of Scientific Instruments, 2018Co-Authors: Craig Chisholm, R Thomas, Amita B Deb, Niels KjaergaardAbstract:We present a three-dimensional steerable optical tweezer system based on two pairs of acousto-optic deflectors. Radio frequency signals used to steer the optical tweezers are generated by Direct Digital Synthesis, and multiple time averaged cross beam dipole traps can be produced through rapid frequency toggling. We produce arrays of ultracold atomic clouds in both horizontal and vertical planes and use this to demonstrate the three-dimensional nature of this optical tweezer system.
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a three dimensional steerable optical tweezer system for ultracold atoms
arXiv: Quantum Gases, 2018Co-Authors: Craig Chisholm, R Thomas, Amita B Deb, Niels KjaergaardAbstract:We present a three-dimensional steerable optical tweezer system based on two pairs of acousto-optic deflectors. Radio frequencies used to steer the optical tweezers are generated by Direct Digital Synthesis and multiple cross beam dipole traps can be produced through rapid frequency toggling and time averaging. We demonstrate production of arrays of ultracold atomic clouds in both horizontal and vertical planes and use this as an indicator for the three-dimensional nature of this optical tweezer system.
Sushil Subramanian - One of the best experts on this subject based on the ideXlab platform.
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a scalable cryo cmos controller for the wideband frequency multiplexed control of spin qubits and transmons
IEEE Journal of Solid-state Circuits, 2020Co-Authors: Jeroen P G Van Dijk, Bishnu Patra, Sushil Subramanian, Xiao Xue, Nodar Samkharadze, Andrea Corna, Charles Jeon, Farhana Sheikh, Esdras Juarezhernandez, Brando Perez EsparzaAbstract:Building a large-scale quantum computer requires the co-optimization of both the quantum bits (qubits) and their control electronics. By operating the CMOS control circuits at cryogenic temperatures (cryo-CMOS), and hence in close proximity to the cryogenic solid-state qubits, a compact quantum-computing system can be achieved, thus promising scalability to the large number of qubits required in a practical application. This work presents a cryo-CMOS microwave signal generator for frequency-multiplexed control of $4\times 32$ qubits (32 qubits per RF output). A Digitally intensive architecture offering full programmability of phase, amplitude, and frequency of the output microwave pulses and a wideband RF front end operating from 2 to 20 GHz allow targeting both spin qubits and transmons. The controller comprises a qubit-phase-tracking Direct Digital Synthesis (DDS) back end for coherent qubit control and a single-sideband (SSB) RF front end optimized for minimum leakage between the qubit channels. Fabricated in Intel 22-nm FinFET technology, it achieves a 48-dB SNR and 45-dB spurious-free dynamic range (SFDR) in a 1-GHz data bandwidth when operating at 3 K, thus enabling high-fidelity qubit control. By exploiting the on-chip 4096-instruction memory, the capability to translate quantum algorithms to microwave signals has been demonstrated by coherently controlling a spin qubit at both 14 and 18 GHz.
Esdras Juarezhernandez - One of the best experts on this subject based on the ideXlab platform.
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a scalable cryo cmos controller for the wideband frequency multiplexed control of spin qubits and transmons
IEEE Journal of Solid-state Circuits, 2020Co-Authors: Jeroen P G Van Dijk, Bishnu Patra, Sushil Subramanian, Xiao Xue, Nodar Samkharadze, Andrea Corna, Charles Jeon, Farhana Sheikh, Esdras Juarezhernandez, Brando Perez EsparzaAbstract:Building a large-scale quantum computer requires the co-optimization of both the quantum bits (qubits) and their control electronics. By operating the CMOS control circuits at cryogenic temperatures (cryo-CMOS), and hence in close proximity to the cryogenic solid-state qubits, a compact quantum-computing system can be achieved, thus promising scalability to the large number of qubits required in a practical application. This work presents a cryo-CMOS microwave signal generator for frequency-multiplexed control of $4\times 32$ qubits (32 qubits per RF output). A Digitally intensive architecture offering full programmability of phase, amplitude, and frequency of the output microwave pulses and a wideband RF front end operating from 2 to 20 GHz allow targeting both spin qubits and transmons. The controller comprises a qubit-phase-tracking Direct Digital Synthesis (DDS) back end for coherent qubit control and a single-sideband (SSB) RF front end optimized for minimum leakage between the qubit channels. Fabricated in Intel 22-nm FinFET technology, it achieves a 48-dB SNR and 45-dB spurious-free dynamic range (SFDR) in a 1-GHz data bandwidth when operating at 3 K, thus enabling high-fidelity qubit control. By exploiting the on-chip 4096-instruction memory, the capability to translate quantum algorithms to microwave signals has been demonstrated by coherently controlling a spin qubit at both 14 and 18 GHz.