Room-temperature supersolid made from light and matter

Overview

Updated 2 hours ago

On November 9, 2026, an international team reported a supersolid made from exciton polaritons, hybrid particles that combine light and matter. The state appeared at temperatures approaching 60°C, roughly 140°F, inside a liquid-crystal microcavity. That removes the ultracold cooling normally required for supersolid experiments.

A supersolid has the repeating internal structure of a crystal and the frictionless flow of a superfluid. The team saw both density fringes and a persistent polarization pattern in light emitted by the device. The microcavity can also be tuned with voltage, giving researchers an electrical control knob for studying the state.

Why it matters

If room-temperature supersolids become controllable, light-based computing and sensing could escape the cryogenic cooling that has kept exotic quantum effects in the lab.

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Key Indicators

60°C

Operating temperature

The liquid-crystal microcavity operates at temperatures approaching 60°C, about 140°F.

1 ps

Exciton-polariton lifetime

These hybrid particles typically survive about one picosecond, one trillionth of a second.

Simultaneous order types

The condensate showed density fringes and a polarization helix at the same time.

Voices

Curated perspectives — historical figures and your fellow readers.

People Involved

Marcin Muszyński

First author of the Science Advances paper; postdoctoral researcher at The City College of New York

Postdoctoral researcher

Wiktor Piecek

Professor at the Military University of Technology; led liquid-crystal structure development

Professor

Guillaume Malpuech

Professor at Institut Pascal, CNRS; co-author

Professor

Organizations Involved

University of Warsaw, Faculty of Physics

University research department

Co-led the experiment

A Polish physics faculty that co-led the room-temperature supersolid experiment.

Military University of Technology

University research department

Developed liquid-crystal microcavities and photonic structures

A Polish technical university that built key optical components for the experiment.

IBM Research Zurich

Corporate research laboratory

Ran key measurements

An IBM research lab that deposited organic semiconductor layers and performed key measurements.

French National Centre for Scientific Research

National research organization

Provided theory and co-authored the work

France's national research agency, which contributed theoretical analysis.

TopoLight consortium

International research consortium

Organized the room-temperature supersolid experiment

An international collaboration studying topological and quantum effects in light-matter systems.

Timeline

1960s November 2026

3 events Latest: Today

November 2026
Room-temperature light-matter supersolid reported
Today Experiment

Exciton-polariton supersolid appears in an electrically tunable liquid-crystal microcavity near 60°C.
Today
2017
Supersolidity confirmed in ultracold atoms
Experiment

Researchers observe supersolid behavior in ultracold atomic Bose-Einstein condensates.
2017
1960s
Supersolid idea proposed
Theory

Physicists propose that a superfluid could also form a crystal-like repeating structure.
1960s

Scenarios

Independent labs reproduce the room-temperature supersolid

Likely Resolves by Nov 9, 2027

Discussed by: TopoLight researchers and the Science Advances paper

If another group builds a similar liquid-crystal microcavity and observes density fringes plus a polarization helix without cooling, the result becomes robust rather than a one-off. Replication would move the platform toward standard use in polariton quantum experiments.

Electrically tunable supersolid yields a working optical device

Possible Resolves by Nov 9, 2029

Discussed by: ScienceDaily and the TopoLight paper's application discussion

The microcavity's voltage control could let engineers tune the quantum state dynamically. A working sensor or neuromorphic computing element would turn the demonstration into a device platform. The obstacle is sample lifetime: the organic semiconductor reacts with the liquid crystal, leaving only hours for measurements.

Sample lifetime remains the bottleneck for practical use

Possible Resolves by Nov 9, 2028

Discussed by: Muszyński's account of the experiment

The samples lasted only a few hours because the organic semiconductor reacted with the liquid crystal. If follow-up work cannot extend operational lifetime, the platform stays useful for short experiments but not for devices. Researchers would need new materials or encapsulation to move forward.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

1995

Bose-Einstein condensate (1995)

Eric Cornell and Carl Wieman cooled rubidium atoms to nanokelvin temperatures and observed a Bose-Einstein condensate. The atoms stopped behaving as independent particles and entered one collective quantum state.

Then

The result opened a new field of ultracold atom experiments.

Now

Bose-Einstein condensates became platforms for atom lasers, quantum simulation, and later supersolid experiments.

Why this matters now

The new supersolid result moves a related quantum state from ultracold atoms to a room-temperature photonic device.

1986

High-temperature superconductors (1986)

Georg Bednorz and Alex Müller found a copper-oxide material that superconducting at about 35 kelvin, higher than existing theories expected. The discovery set off a global search for materials that work at warmer temperatures.

Then

The finding was confirmed and earned the 1987 Nobel Prize in Physics.

Now

It showed that raising the operating temperature of a quantum effect can transform a lab curiosity into an engineering target.

Why this matters now

The supersolid experiment follows the same logic: moving an exotic quantum state from near absolute zero to 60°C changes who can study it and what devices might use it.

2017

Supersolid in ultracold atoms (2017)

Two research teams observed supersolid behavior in ultracold atomic Bose-Einstein condensates. The experiments confirmed a state proposed in the 1960s, with crystal-like order and frictionless flow in the same system.

Then

Supersolidity moved from theory to an experimentally observed phase of matter.

Now

The work established ultracold atoms as the main platform for studying supersolids.

Why this matters now

The 2026 result keeps the same physics but replaces ultracold atoms with exciton polaritons in a liquid-crystal microcavity.