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<p>reminder: Happening in one hour!</p>
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<div class="moz-cite-prefix">On 10/31/24 10:08 AM, Pooyan Goodarzi
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:00d97bea-5d9b-4cfe-8c76-b79655d1b1c2@email.ucr.edu">
<p>Hi all,</p>
<div><br>
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<p>We will have our next PASS talk on Monday with Shelby talking
about his work on Quantum Computing. Please join us on <b>November
4th (Monday)</b> at <b>noon</b> (from 12:00 pm to 1:00 pm) in
the <b>Nebula Room</b> (PHYS 3027).</p>
<p><br>
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<p><span><span class="gmail-Y8pC0"></span></span></p>
<div aria-describedby="tt-display-name-field" class="gmail-YysZRb"><b>Shelby
Mo, PhD student</b></div>
<div aria-describedby="tt-display-name-field" class="gmail-YysZRb">
<p>Monday, 12:00 pm, Nebula Room (PHYS 3027)</p>
<div dir="auto"><b>Modular Fault tolerant scaling of a quantum
chip with lossy links</b></div>
<div dir="auto"><b><br>
</b></div>
<div dir="auto">
<div>A modular approach presents a highly promising direction
for scalable quantum computing. In this work, we show that
separate patches of rotated surface code can be reliably
connected through a fault-tolerant interface, even in the
presence of substantial noise. By implementing a ZigZag cut
along the boundary and using a pair of entangled ancillas as
an extraction gadget—similar to Shor's gadget, hereafter
referred to as the CAT ancilla—our design withstands up to
28 times more noise at the interface than in the bulk,
doubling the best-known tolerance to date (Ramette <em>et
al.</em>, 2024). Our approach also cleverly mitigates hook
errors through an optimized measurement schedule and
strategic boundary choice between modules. Achieving a high
interface noise threshold around 18% and a bulk threshold
near 1%, this design enables exceptionally low logical error
rates, marking a critical step toward practical
fault-tolerant scaling of modular quantum devices with
existing technologies. <br>
</div>
<div><br>
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<div><br>
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<div>
<p>If you’re interested in sharing your work as a speaker,
please feel free to add your name to the spreadsheet [<a
href="https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing"
target="_blank" moz-do-not-send="true">Google Sheet</a>].</p>
<div><br>
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<div>Best,</div>
<div>Pooyan</div>
<span><span>
<div>Physics and Astronomy Student Seminar (PASS)</div>
</span></span></div>
</div>
</div>
<div aria-describedby="tt-display-name-field" class="gmail-YysZRb"><b><br>
</b></div>
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