A5053745452- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Mechanical and Optical Resonators
- Quantum and electron transport phenomena
- Advanced SAR Imaging Techniques
- Microwave Imaging and Scattering Analysis
- Radar Systems and Signal Processing
- Neural Networks and Reservoir Computing
- Photonic and Optical Devices
- Acoustic Wave Resonator Technologies
- Atomic and Subatomic Physics Research
- Laser-Matter Interactions and Applications
- Sensor Technology and Measurement Systems
- Force Microscopy Techniques and Applications
- Advanced Memory and Neural Computing
- Low-power high-performance VLSI design
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Mechanics and Applications
- Quantum optics and atomic interactions
- Electrical Contact Performance and Analysis
KTH Royal Institute of Technology
2020-2023
Intermodulation Products (Sweden)
2020-2023
Chalmers University of Technology
2022
Nanosc (Sweden)
2022
Hosting nonclassical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we experimentally demonstrate high-fidelity generation range Wigner-negative useful computation, such Schrödinger-cat states, binomial Gottesman-Kitaev-Preskill well cubic phase states. The latter have been long sought after optics and never achieved before. We use sequence interleaved selective number-dependent...
Exploiting multiple modes in a quantum acoustic device could enable applications information hardware-efficient setup, including simulation synthetic dimension and continuous-variable computing with cluster states.We develop multimode surface wave (SAW) resonator superconducting interference (SQUID) integrated one of the Bragg reflectors. The interaction SQUID-shunted mirror gives rise to coupling between more than 20 accessible modes. We exploit this demonstrate two-mode squeezing SAW...
We describe a digital microwave platform called Presto, designed for measurement and control of multiple quantum bits (qubits) based on the third-generation radio-frequency system chip. Presto uses direct synthesis to create signals up 9 GHz 16 synchronous output ports, while synchronously analyzing responses input ports. has DC-bias outputs, four inputs outputs triggers or markers, two continuous-wave synthesizing frequencies 15 GHz. Scaling large number qubits is enabled through...
Significant progress has been made with multipartite entanglement of discrete qubits, but continuous variable systems may provide a more scalable path toward large ensembles. We demonstrate in microwave frequency comb generated by Josephson parametric amplifier subject to bichromatic pump. find 64 correlated modes the transmission line using multifrequency digital signal processing platform. Full inseparability is verified subset seven modes. Our method can be expanded generate even...
Nonlinear systems can be probed by driving them with two or more pure tones while measuring the intermodulation products of drive in response. We describe a digital lockin analyzer which is designed explicitly for this purpose. The implemented on field-programmable gate array, providing speed analysis, real-time feedback, and stability operation. use demonstrated atomic force microscopy. A generalization spectral technique to arbitrary waveforms discussed.
An important device for modulation and frequency translation in the field of circuit quantum electrodynamics is in-phase quadrature mixer, an analog component which calibration necessary to achieve optimal performance. In this paper, we introduce techniques originally developed wireless communication applications calibrate upconversion downconversion mixers. A Kalman filter together with a controllable carrier offset calibrates both mixers without removing them from embedding measurement...
We implement an iSWAP gate with two transmon qubits using a flux-tunable coupler. Precise control of the relative phase qubit-control pulses and parametric-coupler drive is achieved multi-channel instrument called Presto direct digital synthesis (DDS), promising technique for scaling up quantum systems. describe process tuning benchmarking gate, where controlled via software. perform in 290 ns, validate it quantum-state tomography, measure 2\% error interleaved randomized benchmarking.
In this article, the effect a moving target has on signal-to-interference-plus-noise-ratio (SINR) for high time-bandwidth noise radars is investigated. To compensate cell migration we apply computationally efficient stretch processing algorithm that tailored batched and suitable implementation onto real-time radar processor. The performance of studied using experimental data. experiment, pseudorandom noise, with bandwidth 100 MHz, generated transmitted in real-time. An unmanned aerial...
Abstract The utilisation of continuous random waveforms for radar, that is, noise has been extensively studied as a candidate low probability intercept operation. However, compared with the more traditional pulse‐Doppler radar systems are significantly complicated to implement, which is likely why few exist. If see light day, system design, implementation, limitations etc., must be investigated. Therefore, authors examine and detail implementation real‐time on field programmable gate array....
Noise-like, continuous waveforms have several benefits for radar operation, such as low probability of interception/identification. However, the same types come with a significant drawback because strong signals, e.g., ground clutter, produce correlation noise floor (CNF) that masks all weak signals. In this article, we report on implementation and performance an efficient clutter suppression algorithm used to suppress echoes allow detection weaker The algorithm's is verified using...
Significant progress has been made with multipartite entanglement of discrete qubits, but continuous variable systems may provide a more scalable path toward large ensembles. We demonstrate in microwave frequency comb generated by Josephson parametric amplifier subject to bichromatic pump. find 64 correlated modes the transmission line using multifrequency digital signal processing platform. Full inseparability is verified subset seven modes. Our method can be expanded generate even...