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X-ORIGINAL-URL:https://quantum.ncsu.edu/ibm-quantum
X-WR-CALDESC:Events for IBM Quantum Innovation Center at NC State
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SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s collaborative Triangle Quantum Computing Seminar \nNo Speaker This week  \nFeb. 4\,  2022 \nPlease Check Calendar posting for Feb. 11\, 2022 for Speaker information.  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series/
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220211T140000
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CREATED:20220125T160137Z
LAST-MODIFIED:20220418T164217Z
UID:1426-1644588000-1644591600@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s collaborative Triangle Quantum Computing Seminar \nTalk Title: Faster and More Reliable Quantum SWAPs via Native Gates \nSpeaker:  Pranav Gokhale\, Co-founder and CEO of Super.tech \nHosted by:  Duke Quantum Center \nAbstract:  Due to the sparse connectivity of superconducting quantum computers\, qubit communication via SWAP gates accounts for the vast majority of overhead in quantum programs. We introduce a method for improving the speed and reliability of SWAPs at the level of the superconducting hardware’s native gateset. Our method relies on four techniques: 1) SWAP Orientation\, 2) Cross-Gate Pulse Cancellation\, 3) Commutation through Cross-Resonance\, and 4) Cross-Resonance Polarity. Importantly\, our Optimized SWAP is bootstrapped from the pre-calibrated gates\, and therefore incurs zero calibration overhead. We experimentally evaluate our optimizations with Qiskit Pulse on IBM hardware. Our Optimized SWAP is 11% faster and 13% more reliable than the Standard SWAP. We also experimentally validate our optimizations on application-level benchmarks. Due to (a) the multiplicatively compounding gains from improved SWAPs and (b) the frequency of SWAPs\, we observe typical improvements in success probability of 10-40%. The Optimized SWAP is available through the SuperstaQ platform. \n  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-2/
CATEGORIES:Triangle Quantum Computing Seminar Series
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220218T140000
DTEND;TZID=America/New_York:20220218T150000
DTSTAMP:20260501T000141
CREATED:20220201T124436Z
LAST-MODIFIED:20220418T164248Z
UID:1428-1645192800-1645196400@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC collaborative Triangle Quantum Computing Seminar \nTalk Title:  Quantum field theories from quantum cellular automata \nSpeaker: Todd Brun\, USC Viterbi School of Engineering \nHosted by:  Duke Quantum Center \nAbstract:  Work done in collaboration with Leonard Mlodin \nQuantum walks (QWs) are unitary analogues of classical random walks\, and quantum cellular automata (QCAs) are unitary analogues of classical cellular automata. The QW on the 3D body-centered cubic lattice gives rise to solutions of the Dirac equation in the long-wavelength limit\, both in 1D and 3D; in 1D\, a two-dimensional internal space is required\, and in 3D a four-dimensional internal space. QWs can be treated as the one-particle sector of a QCA\, so it is natural to seek QCAs that give rise to quantum field theories in a similar limit.  This can be done fairly straightforwardly in one spatial dimension\, with the QCA being naturally described in terms of creation and annihilation operators that create or destroy particle locally\, evolve simply under the QCA unitary\, and obey the usual anticommutation relations.  However\, generalizing this construction to two or more spatial dimensions fails:  the requirements of anticommuting creation and annihilation operators are inconsistent with a local QCA.  For a QCA to give rise to a fermionic quantum field theory in the long-wavelength limit\, one must give up at least one desired property of the QCA. To evade this no-go theorem\, one can let the local subsystems become high-dimensional\, and restrict to the completely antisymmetric subspace of a larger space. Bosonic QCAs can also be constructed; these do not have the same problem with anticommutation\, but also require high-dimensional local subsystems. Taking these constructions as a model of particles propagating in discrete spacetime\, the discreteness could be detected using non-parallel matter interferometers. Finally\, we consider the problem of adding fermion-boson interactions\, and progress towards constructing a fully interacting QCA model\, and the potential for using QCAs to simulate quantum field theory. \n  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-3/
CATEGORIES:Triangle Quantum Computing Seminar Series
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220225T140000
DTEND;TZID=America/New_York:20220225T150000
DTSTAMP:20260501T000141
CREATED:20220208T222143Z
LAST-MODIFIED:20220418T164328Z
UID:1481-1645797600-1645801200@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC collaborative Triangle Quantum Computing Seminar \nTalk Title:  Variational Quantum Boltzmann Machines \nSpeaker: Christa Zoufal\, IBM – Zurich \nHosted by:  IBM Quantum Hub at NC State \nAbstract:  This work presents a novel realization approach to Quantum Boltzmann Machines (QBMs). The preparation of the required Gibbs states\, as well as the evaluation of the loss function’s analytic gradient is based on Variational Quantum Imaginary Time Evolution\, a technique that is typically used for ground state computation. In contrast to existing methods\, this implementation facilitates near-term compatible QBM training with gradients of the actual loss function for arbitrary parameterized Hamiltonians which do not necessarily have to be fully-visible but may also include hidden units. The variational Gibbs state approximation is demonstrated with numerical simulations and experiments run on real quantum hardware provided by IBM Quantum. Furthermore\, we illustrate the application of this variational QBM approach to generative and discriminative learning tasks using numerical simulation. \n  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-4/
CATEGORIES:Triangle Quantum Computing Seminar Series
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