QubiC 2.0: An Extensible Open-Source Qubit Control System Capable of Mid-Circuit Measurement and Feed-Forward

Posted by klaurent Berkeley

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: Yilun Xu, Gang Huang, Neelay Fruitwala, Abhi Rajagopala, Ravi K. Naik | Summary: Researchers manipulate and measure quantum processing units via the classical electronics control system. We developed an open-source FPGA-based quantum bit control system called QubiC for superconducting qubits. After a few years of qubit calibration […]


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Baichuan 2: Open Large-scale Language Models

Posted by klaurent Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Aiyuan Yang, Bin Xiao, Bingning Wang, Borong Zhang, Ce Bian | Summary: Large language models (LLMs) have demonstrated remarkable performance on a variety of natural language tasks based on just a few examples of natural language instructions, reducing the need for extensive feature engineering. However, most powerful […]


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NICER observations of thermonuclear bursts from 4U 1728-34: Detection of oscillations prior to the onset of two bursts

Posted by klaurent MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Funda Bostanci, Tugba Boztepe, Tolga Guver, Tod E. Strohmayer, Yuri Cavecchi | Summary: We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary (LMXB) 4U 1728-34 with NICER from June 2017 to September 2019. In total, […]


Continue.. NICER observations of thermonuclear bursts from 4U 1728-34: Detection of oscillations prior to the onset of two bursts

Emergent Chern-Simons Interactions in 3+1 Dimensions

Posted by dbos MIT

Kavli Affiliate: Frank Wilczek | First 5 Authors: Marcus Stålhammar, Darya Rudneva, Thors Hans Hansson, Frank Wilczek, | Summary: Parity violating superconductors can support a low-dimension local interaction that becomes, upon condensation, a purely spatial Chern-Simons term. Solutions to the resulting generalized London equations can be obtained from solutions of the ordinary London equations with […]


Continue.. Emergent Chern-Simons Interactions in 3+1 Dimensions

Emergent Chern-Simons Interactions in 3+1 Dimensions

Posted by klaurent MIT

Kavli Affiliate: Frank Wilczek | First 5 Authors: Marcus Stålhammar, Darya Rudneva, Thors Hans Hansson, Frank Wilczek, | Summary: Parity violating superconductors can support a low-dimension local interaction that becomes, upon condensation, a purely spatial Chern-Simons term. Solutions to the resulting generalized London equations can be obtained from solutions of the ordinary London equations with […]


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TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b

Posted by dbos MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Stephanie Yoshida, Shreyas Vissapragada, David W. Latham, Allyson Bieryla, Daniel P. Thorngren | Summary: We present the discovery of TOI-1420b, an exceptionally low-density ($rho = 0.08pm0.02$ g cm$^{-3}$) transiting planet in a $P = 6.96$ day orbit around a late G dwarf star. Using transit observations from […]


Continue.. TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b

TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b

Posted by dbos MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Stephanie Yoshida, Shreyas Vissapragada, David W. Latham, Allyson Bieryla, Daniel P. Thorngren | Summary: We present the discovery of TOI-1420b, an exceptionally low-density ($rho = 0.08pm0.02$ g cm$^{-3}$) transiting planet in a $P = 6.96$ day orbit around a late G dwarf star. Using transit observations from […]


Continue.. TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b

Quasi-periodic oscillations during magnetar giant flares in the strangeon star model

Posted by dbos Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Hong-Bo Li, Yacheng Kang, Zexin Hu, Lijing Shao, Cheng-Jun Xia | Summary: Soft gamma-ray repeaters (SGRs) are widely understood as slowly rotating isolated neutron stars. Their generally large spin-down rates, high magnetic fields, and strong outburst energies render them different from ordinary pulsars. In a few giant […]


Continue.. Quasi-periodic oscillations during magnetar giant flares in the strangeon star model

Quasi-periodic oscillations during magnetar giant flares in the strangeon star model

Posted by dbos Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Hong-Bo Li, Yacheng Kang, Zexin Hu, Lijing Shao, Cheng-Jun Xia | Summary: Soft gamma-ray repeaters (SGRs) are widely understood as slowly rotating isolated neutron stars. Their generally large spin-down rates, high magnetic fields, and strong outburst energies render them different from ordinary pulsars. In a few giant […]


Continue.. Quasi-periodic oscillations during magnetar giant flares in the strangeon star model

Quasi-periodic oscillations during magnetar giant flares in the strangeon star model

Posted by klaurent Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Hong-Bo Li, Yacheng Kang, Zexin Hu, Lijing Shao, Cheng-Jun Xia | Summary: Soft gamma-ray repeaters (SGRs) are widely understood as slowly rotating isolated neutron stars. Their generally large spin-down rates, high magnetic fields, and strong outburst energies render them different from ordinary pulsars. In a few giant […]


Continue.. Quasi-periodic oscillations during magnetar giant flares in the strangeon star model