Dear all,
We have this talk on quantum startup bootcamps today at 4pm!
https://ethz.zoom.us/j/68223543732 <https://ethz.zoom.us/j/68223543732>
Best,
Lídia
Quantum Futures is a seminar series organized by the ETH Zurich Quantum
Center, with a focus on careers in quantum technologies. We talk to
academics, startups, established companies and quantum research centers
around the world to bring you career advice and news of job
opportunities. If you missed it, you can watch the first edition (an
interview with professors Yiwen Chu and Renato Renner) on ourYouTube
channel <https://www.youtube.com/channel/UCJa7n2dv7ZtdG--Ki-oMNHw>.
*Coming up on the 30th of April: a bootcamp for quantum startups!*
Would you like to venture into the world of startups? Perhaps you have a
research idea that could be turned into a company, or maybe you'd just
like to meet like-minded researchers and students and join them in such
a project? There are now startup incubators dedicated to quantum
technologies!
The Quantum Center welcomes Sam Kearney and Sean Oh for a presentation
of the Quantum Stream of the Creative Destruction Labs in Toronto.
The CDL is a non-profit organization that hosts a series of year-long
programs to train founders and connect them to mentors in industry and
academia, with the goal of forming companies to explore ideas in quantum
technologies and computing. Applications are now open for the next batch
of the bootcamp (deadline 23rd of May), and in this seminar we will
learn how the program works and how to apply. Two key aspects are that
the program is free for founders, and that you don't need a concrete
idea to apply. You can consult theCDL Quantum Stream Summary
<https://sgnldrp.online/click?redirect=https%3A%2F%2Fdrive.google.com%2Ffile…>,
theList of mentors in the Quantum Program
<https://sgnldrp.online/click?redirect=https%3A%2F%2Fwww.creativedestruction…>and
the List of CDL Quantum alumni
<https://sgnldrp.online/click?redirect=https%3A%2F%2Fwww.creativedestruction…>.
*When:*Friday, 30th of April, 4pm
*Duration:*45min
*Where:*Zoom (https://ethz.zoom.us/j/68223543732
<https://ethz.zoom.us/j/68223543732>) and YouTube
(https://www.youtube.com/channel/UCJa7n2dv7ZtdG--Ki-oMNHw
<https://www.youtube.com/channel/UCJa7n2dv7ZtdG--Ki-oMNHw>). The
recording will be available on YouTube after the seminar.
*Audience:*students and researchers in quantum science and technologies
/What is the Quantum Center?/
The freshly launchedQuantum Center <http://www.qc.ethz.ch/>is a network
of 28 research groups from ETH Zurich and PSI. The center coordinates
the various scientific and structural activities in quantum science and
technology at ETH Zurich. In particular, it interconnects research and
teaching across ETH departments and further strengthens current
activities by leveraging the broad competencies available at ETH Zurich.
You can follow us on Twitter @ETHQuantumCntr and sign up to theQuantum
Center Newsletter <https://qc.ethz.ch/news-events/mailing-list.html>to
stay in touch and learn about upcoming activities.
Hi all,
Tomorrow Florian Meier will tell us about his semester project with Lídia,
entitled "Online Erasure in Quantum Computers: Hidden Subgroup Problem with
Partial Information". See below for the abstract. We start at 2pm on zoom:
https://ethz.zoom.us/j/362994444.
Best,
Joe
Abstract:
Both finite memory and heat generation are problems for experimental
realizations of quantum computers. A naïve erasure of a quantum memory
costs work and dissipates heat into the quantum computer's environment due
to Landauer's principle. We propose a protocol for erasing qubits on the
go, in the middle of a quantum algorithm, hence the name online erasure. We
define this protocol for instances of quantum algorithms solving the hidden
subgroup problem. Making use of the entanglement between the ancillary
register and the main register the online erasure procedure can be used to
absorb heat from the environment, thus cooling the quantum computer on the
go, while still solving the hidden subgroup problem. If we are looking at a
hidden subgroup H of a group G the work cost of erasure can be negative and
is lower bounded by -kT ln|G/H|. Moreover, we investigate whether the
existence of an online erasure protocol implies that the quantum algorithm
could have been simplified in the first place, in the sense that it could
run on fewer qubits. Quantitatively, if we have open circuit access to the
function oracle, an online erasure protocol erasing k ancilla qubits can be
repurposed to reduce the number of main and ancilla qubits each by k.
Hi all,
Tomorrow Sven Jandura will tell us about his master thesis with Ernest,
entitled "De Finetti Theorems for Quantum Conditional Probability
Distributions with Symmetry". See below for the abstract. We start at 2pm
on zoom: https://ethz.zoom.us/j/362994444.
Best,
Joe
Abstract: In device independent quantum key distribution (DIQKD) Alice
and Bob try to establish a shared secret key without trusting the
devices used in key generation. The setup must therefore be treated as a
black box and is mathematically described by a conditional probability
distribution. Security proofs of DIQKD protocols can be simplified if
the attacker can be restricted to attack each round in the key
distribution process in an identical fashion (collective attacks). For
many protocols such a reduction is available through the entropy
accumulation theorem (EAT), but there are interesting protocols where
the EAT is not applicable. In this presentation we introduce two de
Finetti theorems that relate the properties of an arbitrary
Clauser-Horne-Shimony-Holt (CHSH) symmetric quantum black box to a
convex combination of iid quantum black boxes (de Finetti boxes). We
further discuss how these theorems could be used in DIQKD security
proofs, even if the EAT is not applicable, to impose restrictions on the
attacker.
Dear all,
Happy World Quantum Day! Join us today for a lunch interview with Renato
and Yiwen Chu at 12:00.
Best,
Lídia
———————————————————————————————————————————————————
>
> Dear all,
> April 14th is*World Quantum Day*! On the occasion of the launch of
> this initiative, the Quantum Center, ETH Zurich invites you, your
> family and friends to an online interview with Professors*Yiwen Chu
> and Renato Renner*, moderated by Chiara Decaroli. We will talk about
> what does it mean to be a Quantum Scientist, what is Quantum Science
> and what kinds of research are carried out by Quantum Center members.
> Join us on*April 14th, 2021 at 12:00*Zurich time at the following zoom
> link:https://ethz.zoom.us/j/68223543732
> <https://ethz.zoom.us/j/68223543732>
> ———————————————————————————————————————————
> /What is the World Quantum Day?/
> //
> The World Quantum Day is a new decentralised outreach initiative to
> promote the public understanding of quantum science and technology. We
> invite all quantum scientists, engineers, educators, communicators
> andentrepreneursto promote their own activities, such as outreach
> talks, lab tours, debates, lectures or interviews at a global scale.
> This year we celebrate the first World Quantum Day, on the 14th of
> April. Find out more and register your own events
> athttps://worldquantumday.org <https://worldquantumday.org/>
> /What is the Quantum Center, ETH Zurich?/
> //
> The freshly launchedQuantum Center <http://www.qc.ethz.ch/>is a
> network of 28 research groups from ETH Zurich and PSI. The Center
> coordinates the various scientific and structural activities in
> quantum science and technology at ETH Zurich. In particular, it
> interconnects research and teaching across ETH departments and further
> strengthens current activities by leveraging the broad competencies
> available at ETH Zurich. You can follow us on Twitter: @ETHQuantumCntr
> and sign up to theQuantum Center Newsletter
> <https://qc.ethz.ch/news-events/mailing-list.html>to stay in touch and
> learn about upcoming activities.
> Best regards,
> Chiara Decaroli, Lidia del Rio & Francesca Bay
Hi all,
Tomorrow Ladina Hausmann will tell us about her master thesis, entitled
''Axiomatic Black Hole Thermodynamics''. See below for the abstract. We
start at 2pm in zoom: https://ethz.zoom.us/j/362994444.
Best,
Joe
Abstract:
In order to establish under which conditions specific results from black
hole thermodynamics hold, it is important to know which assumptions were
made on the thermodynamic theory. This can be accomplished through the use
of a rigorous phenomenological axiomatic framework, such at that proposed
by Kammerlander [1]. However, existing frameworks only consider energy as a
conserved quantity. This means that the applicability of these frameworks
to systems which have multiple conserved quantities is limited. As black
holes have internal angular momentum and charge, this limitation also
extends to them. In this work, we address this by extending Kammerlander's
framework to describe multiple conserved quantities.
To do so, we first consider microscopic thermodynamics to extend
Kammerlander's framework and then to verify our generalisations. Next, we
apply our extended framework to black holes, and we successfully confirm
all previously established results which we took under consideration.
[1] Philipp Kammerlander. Tangible Phenomenological Thermodynamics. PhD
thesis, ETH Zurich, 2019
Hi all,
Tomorrow Julia Karlen will tell us about her semester project with Jinzhao,
entitled "Entropy and entanglement wedge reconstruction in holography". See
below for the abstract. We start at 2pm on zoom:
https://ethz.zoom.us/j/362994444.
Best,
Joe
Abstract:
Holography states that gravitational physics in the bulk can be
equivalently described as an ordinary quantum theory on its boundary. We
review some recent developments of the AdS/CFT correspondence in the
semiclassical limit. We take a closer look at the derivation of the
holographic entanglement entropies, using the gravitational replica method.
With the cosmic brane prescription, we can deduce, that the refined Rényi
entropy has an area law such as the Ryu-Takayanagi (RT) formula for the von
Neumann entropy. A black hole in Jackiw–Teitelboim (JT) gravity is examined
to elaborate the RT formula. AdS/CFT bears some mysterious features, which
hint at a quantum error correction viewpoint, where the bulk information
can be redundantly encoded into the boundary using error correcting codes.
>From this perspective, the equivalence of the RT formula, entanglement
wedge reconstruction and the matching of the relative entropies in bulk and
boundary can be demonstrated. Within the framework of universal recovery
channels, exact and approximate entanglement wedge reconstruction are
examined more carefully.