131

Quantum Theory faces Cosmology, and vice-versa

May 9, 2022 by | Uncategorized

Thursday, 12 May 2022 @ 4 PM. Join us on Zoom. Abstract: In its usual formulation, Quantum Theory presents apparently unavoidable difficulties when applied to Cosmology. Hence, either it is assumed that the Quantum Theory is not wide enough to apply to the physics of the Universe, nowadays successfully tested by numerous sophisticated observations, or

126

Bounding quantum advantages in Postselected Metrology

April 28, 2022 by | Uncategorized

Friday, 6 May 2022 @ 9 AM. Join us on Zoom. Abstract: Weak value amplification and other postselection-based metrological protocols can enhance precision while estimating small parameters, outperforming postselection-free protocols. In general, these enhancements are largely constrained because the protocols yielding higher precision are rarely obtained due to a lower probability of successful postselection. It

122

Quantum Steampunk: The Physics of Yesterday's Tomorrow

April 22, 2022 by | Uncategorized

Wednesday, 27 April in 404 Beckman Hall at 6PM, or join us on Zoom. The Industrial Revolution meets the quantum-technology revolution! A steampunk adventure guide to how mind-blowing quantum physics is transforming our understanding of information and energy. Victorian era steam engines and particle physics may seem worlds (as well as centuries) apart, yet a

114

Weak measurements and quantum Zeno effect

April 18, 2022 by | Uncategorized

Friday, 22 April 2022 @ 9 AM. Join us on Zoom. Abstract: A quantum decaying system can reveal its nonclassical behavior by being noninvasively measured. Correlations of weak measurements in the noninvasive limit violate the classical bound for a universal class of systems. The violation is related to incompatibility between exponential decay and unitary evolution,

110

Detecting Axions from electron-spin precession

April 12, 2022 by | Uncategorized

Thursday, 14 April 2022 @ 4 PM in 149 Keck Center, or join us on Zoom. Abstract:  After a pedagogical introduction of Axion and the Strong CP problem, I will show how the axion induces an additional spin-precession in the Schrodinger equation.  We will together explore the possibility of using ideas in weak measurements to

105

The arrow of time in a relational universe

April 5, 2022 by | Uncategorized

Wednesday, 13 April 2022 @ 12PM in 149 Keck Center, or join us on Zoom. Abstract: Relationalism posits that one must be able to describe the universe as a whole without reference to any external structure (clocks, rods, frame of reference, etc.) and should consequently also not obey any external arrow of time. Clocks, rods,

100

No-signalling assamblages beyond quantum mechanics: when quantum theory can generate extremal points in a post-quantum framework

April 4, 2022 by | Uncategorized

Wednesday, 6 April 2022 @ 12PM in 149 Keck Center, or join us on Zoom. Abstract: It is well known that in the language of  no-signaling boxes  – consistent families of probabilites representing measurement correlations –  the following three sets: local deterministic, quantum and no-signalling constitute the increasing sequence with strict inclusions. Moreover the outer

89

Welcome John Howell!

March 9, 2022 by | Uncategorized

Dear IQS members, We are delighted to announce that John Howell will be joining us here as a new faculty member at Chapman University in the coming summer.  John is an expert in quantum optics, quantum information, precision measurements, and all manner of optical imaging. An overview of his work is on his Google scholar

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