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Event Videos

May 5, 2021
Speaker: Javier Sanchez-Yamagishi (UC Irvine)

Spin qubits based on diamond NV centers can detect tiny magnetic fields; thin two-dimensional materials produce tiny magnetic fields.  Do they make a good match?  I will discuss two works that explored how NV magnetometry can uniquely probe the spins and currents in crystals that are one-at

April 28, 2021
Speaker: Ben Bartlett & Sunil Pai (Stanford University)

 

April 21, 2021
Speaker: Valentina Parigi (Laboratoire Kastler Brossel – Sorbonne Université, Paris)

Experimental procedures based on optical frequency combs and parametric processes produce quantum states of light involving large numbers of spectro-temporal modes that can be mapped and analyzed in terms of quantum complex networks.

April 14, 2021
Speaker: Timothy P. McKenna (Stanford University) & Ryotatsu Yanagimoto (Stanford University)

Speaker #1: Timothy P. McKenna 

March 24, 2021
Speaker: Avi Pe’er (Bar Ilan University)

Squeezed light is a major resource for quantum sensing, which has been already implemented in high-end interferometric sensing, such as gravitational wave detection. However, standard squeezed interferometry methods suffer from two severe limitations.

March 10, 2021
Speaker: Natalia Berloff (University of Cambridge)

The recent advances in the development of physical platforms for solving combinatorial optimisation problems reveal the future of high-performance computing for quantum and classical devices.

February 24, 2021
Speaker: Lilian Childress (McGill University)

Defect centers in diamond can offer atomic-like optical transitions and long-lived spin degrees of freedom.

January 13, 2021
Speaker: Debayan Mitra (Harvard University)

Laser cooling and evaporative cooling are the workhorse techniques that have revolutionized the control of atomic systems.

December 2, 2020
Speaker: Kartik Srinivasan (University of Maryland/NIST Joint Quantum Institute)

Nanophotonics provides the unprecedented opportunity to engineer nonlinear optical interactions through the nanometer-scale control of geometry provided by modern fabrication technology.  In this talk, I will outline our laboratory’s efforts towards realizing the ability to engineer nonline

November 25, 2020
Speaker: Victoria Xu (UC Berkeley)

Atom interferometers are powerful tools for both measurements in fundamental physics and inertial sensing applications. Their performance, however, has been limited by the available interrogation time of atoms freely falling in a gravitational field.

November 18, 2020
Speaker: Robin Blume-Kohout (Sandia National Labs)

 Error models for quantum computing processors describe their deviation from ideal behavior and predict the consequences in applications.  But experimental behavior is rarely consistent with error models, even in characterization experiments like randomized benchmarking (RB) or gate set tom

October 28, 2020
Speaker: Aziza Suleymanzade (University of Chicago)

Millimeter-wave frequencies (30-300GHz) provide a promising platform for quantum information technology at less explored but potentially beneficial length and energy scales.

September 30, 2020
Speaker: Filippo Miatto (Télécom Paris)

Photonic circuits are a promising platform for quantum computation and quantum communication: they don’t require low temperatures or vacuum to operate and they can be built on a small chip.

September 16, 2020
Speaker: Geoff Pryde (Griffith University)

Quantum computing famously promises an exponential speedup in runtime for universal computation applications such as code breaking and simulation. However, it is possible to identify a number of processing tasks—perhaps of a different nature—for which other quantum advantages exist.

September 2, 2020
Speaker: Tomas Jochym-O'Connor (IBM T.J. Watson Research Center)

The disjointness for stabilizer codes in quantum error correction is an algebraic quantity tied to the structure of the stabilizer generators of a code.

August 19, 2020
Speaker: Ido Kaminer (Technion –­­ Israel Institute of Technology)

Research of cavity quantum electrodynamics (CQED) has enabled new capabilities in quantum optics, quantum computation, and various quantum technologies.

August 5, 2020
Speaker: Jacques Carolan (Niels Bohr Institute at the University of Copenhagen)

Photons play a central role in many areas of quantum information science, either as qubit themselves or to mediate interactions between long-lived matter based qubits.

July 22, 2020
Speaker: Rafał Demkowicz-Dobrzański (University of Warsaw, Poland)

ABSTRACT: I will review the most recent advances in the theoretical methods of quantum metrology, focusing on the quantum information related concepts such as quantum error-correction and matrix product states formalism.

June 24, 2020
Speaker: Paul G. Kwiat (University of Illinois at Urbana-Champaign)

Despite their many applications over the last decades, entangled and single-photon sources from probabilistic sources such as spontaneous parametric downconversion have limited performance due to the presence of unwanted multi-pair events.  For example, it is not possible to produce a heral

June 17, 2020
Speaker: Mohammad Hafezi (University of Maryland)

With the advances of quantum simulators in implementing various quantum many-body states, it is important to find efficient ways to characterize and measure many-body states, without resorting to full quantum state tomography.

May 27, 2020
Speaker: Liang Jiang (University of Chicago)

Bosonic modes are widely used for quantum communication and information processing.

April 15, 2020
Speaker: Mark Wilde (Louisiana State University)

The generalized amplitude damping channel (GADC) is one of the sources of noise in superconducting-circuit-based quantum computing.

April 1, 2020
Speaker: Adam Kaufman

The development of microscopic detection of ensembles of neutral atoms has transformed our ability to study complex many-body systems.

March 18, 2020
Speaker: Stefan Leichenauer, X (formerly Google X)
March 4, 2020
Speaker: Stanford PULSE Institute and Stanford PhD candidate

Ultrafast Spectroscopy of Quantum Materials

February 19, 2020
Speaker: Stanislav Fort, PhD candidate (Stanford)

Quantum State Tomography is the task of determining an unknown quantum state by making measurements on identical copies of the state.

February 5, 2020
Speaker: Prof. Jakob Reichel (Laboratoire Kastler Brossel, Paris)
Atom-Photon interaction is everywhere in quantum information, and it is never good enough.
January 29, 2020
Speaker: Vedika Khemani

Time crystals are new states of matter that only exist in an out-of-equilibrium setting. I will review the state of this rapidly evolving field, focusing in particular on some of the remarkable properties of this phase, and the surprises coming out of its study.

November 6, 2019
Speaker: Soonwon Choi, UC Berkeley

Open quantum systems can display rich dynamics of quantum information: the information may be scrambled within the system, leaked to an environment, or shared between the system and the environment.

October 23, 2019
Speaker: Tibor Rakovszky (Technical University, Munich)

The far-from-equilibrium dynamics of closed quantum systems has become a central topic in condensed matter physics, due to incredible experimental advances in cold atomic and other systems.

August 14, 2019
Speaker: Johannes Zeiher

Quantum simulations based on laser-cooled atomic gases have started to fulfill Feynman's vision of using well controlled quantum systems to obtain insight into problems which are hard to tackle on classical computers.

March 27, 2019
Speaker: Stephen Kuenstner (Stanford)

Advances in quantum sensors is enabling tabletop experiments to probe particle physics beyond the standard model, including searching for dark matter.

March 27, 2019
Speaker: Alex Sushkov (Boston University)

The nature of dark matter is one of the most important open problems in modern physics. Axions, originally introduced to resolve the strong CP problem in quantum chromodynamics (QCD), and axion-like particles, are strongly motivated dark matter candidates.

March 13, 2019
Speaker: Yudan Guo

Ultracold atoms trapped in multimode optical resonators present new opportunities for studying interacting many-body systems. I will present our first experiment on studying photon-mediated atom-atom interactions in a confocal multimode cavity.

Approximate quantum error correction and symmetries | Sepehr Nezami
February 27, 2019
Speaker: Sepehr Nezami | Patricio Arrangoiz-Arriola

Approximate quantum error correction and symmetriesSepehr Nezami. Contributing Authors: Philippe Faist, Victor V.

Resolving the energy levels of a mechanical oscillator | Patricio Arrangoiz-Arriola
February 27, 2019
Speaker: Sepehr Nezami | Patricio Arrangoiz-Arriola

Approximate quantum error correction and symmetriesSepehr Nezami. Contributing Authors: Philippe Faist, Victor V.

February 13, 2019
Speaker: Aaron Sharpe

When two sheets of graphene are stacked at a small twist angle, the resulting flat superlattice minibands are expected to strongly enhance electron-electron interactions.

February 13, 2019
Speaker: Tatsuhiro Onodera

The ultrashort-pulse optical parametric oscillator (OPOs) below threshold has been engineered to generate multimode squeezing and entanglement among the various frequency components of the broadband pulses.

January 16, 2019
Speaker: Emily Davis

Photon-mediated interactions among atoms coupled to an optical cavity are a powerful tool for engineering quantum many-body Hamiltonians.

January 16, 2019
Speaker: Rahul Trivedi

Scattering matrices have been a key theoretical tool for the analysis of quantum field theories.