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Reposted by Mayank Shreshtha

Physics World @physicsworld.bsky.social · 29d

In the fourth of our series of truly weird quantum effects we look at the bizarre situation in which the causal order of events are in a quantum superposition. 🧪⚛️ ow.ly/zLrQ50WTWmj

Indefinite causal order: how quantum physics is challenging our understanding of cause and effect – Physics World

Quantum mechanics allows events to occur with indefinite causal order, as Hamish Johnston discovers

ow.ly

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Mayank Shreshtha @shreshthamayank.bsky.social · 29d

4/ In some quantum processes, the order isn’t fixed. Operations can be in a superposition of “A then B” and “B then A.” That’s indefinite causal order—the essence of a quantum switch.

#QuantumPhysics #Physics #SciArt #IYQ2025 #Quantum
@ioppublishing.bsky.social @iopp-quantum.bsky.social

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Mayank Shreshtha @shreshthamayank.bsky.social · 29d

1/ Kitchen thought experiment (v1): Alice drops a glass → the crash startles Bob → he knocks bowls onto his toe → yelp.

2/
Kitchen thought experiment (v2): Bob knocks bowls onto his toe → the yelp startles Alice → she drops a glass. Which happened first?

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Mayank Shreshtha @shreshthamayank.bsky.social · 29d

See the simplified illustration + full caption:

tinyurl.com/4jamhfn8

Indefinite causal order: how quantum physics is challenging our understanding of cause and effect – Physics World

Quantum mechanics allows events to occur with indefinite causal order, as Hamish Johnston discovers

tinyurl.com

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Mayank Shreshtha @shreshthamayank.bsky.social · 29d

New @physicsworld.bsky.social illustration: what if quantum superposition applies to time and causality (cause and effect? Indefinite causal order asks whether A causes B, B causes A…or both at once. I made a simplified take for quantum switches.

#QuantumPhysics #Physics #SciArt #IYQ2025 #Quantum

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Mayank Shreshtha @shreshthamayank.bsky.social · Sep 8

... sometimes obscure work quietly laying the groundwork for revolutions that will infiltrate some of the most essential aspects of our lives 50 years from now."

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Mayank Shreshtha @shreshthamayank.bsky.social · Sep 8

"If you're reading this on a phone or laptop, you’re holding the result of a gamble someone once made on curiosity. That same curiosity is still alive in university and research labs today—in often unglamorous, ...
www.technologyreview.com/2025/09/08/1...

Why basic science deserves our boldest investment

The humble inventions that power our modern world wouldn’t have been possible without decades of support for early-stage research.

www.technologyreview.com

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Mayank Shreshtha @shreshthamayank.bsky.social · Sep 1

@natcomms.nature.com could you please fix the quality of the illustration? It should look like the pdf version of the paper.

www.nature.com/articles/s41...

Fig. 1: Illustration of the quantum transport problem. | Nature Communications

www.nature.com

Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

Note: Article's online version currently has some resolution issues.

#sciart #quantum #physics #IYQ2025 #scicomm

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

PDF article: rdcu.be/eCuKq

Quantum transport protected by acceleration from nonadiabaticity and dissipation

Nature Communications - The authors introduce a novel method (AC-QUDIT) for achieving high-fidelity transport of quantum wavepackets in the presence of dissipation and leakage to the continuum....

rdcu.be

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

Behind the Scenes: communities.springernature.com/posts/how-to...

How to carry a glass of quantum “drink” through a rowdy crowd without spilling it?

We propose a method for fast transport of a quantum particle in a shallow vessel (trap) that ensures faithful delivery of the particle even if it has to cross a randomly fluctuating medium on it...

communities.springernature.com

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

My main job was to model Chaplin's (fast-and-slow) gait based on the given brief. The other two subfigures contain technical details; subfigure (C) has some artwork (pink wave packets) given by Dr Arnab Chakrabarti. This work was done more than two years ago, and finally it's here!

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

Apparently, a similar strategy was adopted by Arnab Chakrabarti, Biswarup Ash, Igor Mazets, Xi Chen and Gershon Kurizki to model how to transport fragile quantum matter before it leaks out of its shallow trap. This study was published last week in @natcomms.nature.com @natureportfolio.nature.com

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

Unknowingly, especially when we are in a hurry, a general strategy that we all generally follow is to vary our pace: fast, slow, fast, slow . . . destination. This peculiar choreography, quick steps, then slowing down, then quick again, cancels the impending slosh.

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Mayank Shreshtha @shreshthamayank.bsky.social · Aug 26

Modern life is very difficult these days, especially while walking with a hot drink (filled to the brim). Some of us tiptoe; some walk fast enough to prevent the spilling; others proceed carefully and slowly towards the ultimate destination.

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Mayank Shreshtha @shreshthamayank.bsky.social · Jul 30

The study reveals the secrets of a mysterious state of matter, the pseudogap, where electrons blur into a diffuse, entangled soup before the material locks into a Mott insulator.

arXiv link: arxiv.org/pdf/2507.17201

#CondMatt #QuantumMaterials #MetalInsulatorTransition #MottInsulator #ArXiv

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Mayank Shreshtha @shreshthamayank.bsky.social · Jul 30

Electrons usually flow freely in metals and stall in insulators, but some “quantum materials” can flip between the two. The schematic was made for a preprint that visualises this transition.
#Science #Physics #MaterialsScience #ResearchHighlight #quantum #entanglement #SciArt

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Mayank Shreshtha @shreshthamayank.bsky.social · Jul 7

It was nice to stumble upon my @physicsworld.bsky.social PW's 'Cheshire cat' coverart in the office today :)

#sciart #physics #Quantum

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Mayank Shreshtha @shreshthamayank.bsky.social · Jul 1

An excellent and nuanced piece of science journalism with fresh analogies, role of entanglement, and strangeness of 'Strange Metals' by @zacksavitsky.bsky.social @science.org

#quantum #quantummatter #condmat #scicomm #physics

zack savitsky @zacksavitsky.bsky.social · Jun 27

in a copper-clad laboratory in Vienna, the textbook understanding of electricity is starting to crack. what’s emerging is a new vision of electronics without the electron.

my latest feature for @science.org

www.science.org/content/arti...

‘Strange metals’ point to a whole new way to understand electricity

Exotic materials with bizarre electron behavior could pave the road to revolutionary technologies

www.science.org

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Mayank Shreshtha @shreshthamayank.bsky.social · Jun 16

Cover story by Iulia Georgescu for @physicsworld.bsky.social :

physicsworld.com/a/curiouser-...

#IYQ2025 #Quantum #Cats

Curiouser and curiouser: delving into quantum Cheshire cats – Physics World

Iulia Georgescu tumbles down the rabbit-hole to explore the curiosity that is a quantum Cheshire cat

physicsworld.com

Mayank Shreshtha @shreshthamayank.bsky.social · Jun 16

Physics World Helgoland post link: [3/3]

bsky.app/profile/phys...

Physics World @physicsworld.bsky.social · Jun 12

The free-to-read Physics World Quantum Briefing on display on the island of Helgoland, just metres from where Werner Heisenberg did his seminal work on quantum mechanics 100 years ago. It includes a great article on quantum Cheshire cats from Iulia Georgescu.
🧪⚛️🔭
physicsworld.com/p/magazine/a...

Photo of Physics World Quantum Briefing on the island of Helgoland.

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Mayank Shreshtha @shreshthamayank.bsky.social · Jun 16

This issue features all three of my illustration projects compiled in 'Quantum Mystery' section.

Quantum Briefing Link: [2/3]

shorturl.at/bDPLq

Physics World Quantum Briefing 2025 – Physics World

shorturl.at

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Mayank Shreshtha @shreshthamayank.bsky.social · Jun 16

Recently, a few pictures made me happy:

1. My 'Quantum Cheshire Cat' illustration is on the June 2025 @physicsworld.bsky.social cover.

2. A century after Heisenberg’s Helgoland breakthrough, my work appears near that very spot in Quantum Briefing 2025. Source: Physics World [1/3]

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Reposted by Mayank Shreshtha

Physics World @physicsworld.bsky.social · Jun 12

The free-to-read Physics World Quantum Briefing on display on the island of Helgoland, just metres from where Werner Heisenberg did his seminal work on quantum mechanics 100 years ago. It includes a great article on quantum Cheshire cats from Iulia Georgescu.
🧪⚛️🔭
physicsworld.com/p/magazine/a...

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Mayank Shreshtha @shreshthamayank.bsky.social · Jun 13

Happy (more than happy!) to see my illustrations at this special spot 😊

bsky.app/profile/shre...

Matin Durrani @matindurrani.bsky.social · Jun 12

Physics World Quantum Briefing as seen at the very spot in Helgoland where Werner Heisenberg had his pioneering insights into quantum mechanics 100 years ago in June 1925. Check the issue out here.

physicsworld.com/p/magazine/a...

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