The thermodynamics of quantum computing

The thermodynamics of quantum computing

Heat and computers do not mix well. If computers overheat, they do not work well or may even crash. But what about the quantum computers of the future? These high-performance devices are even more sensitive to heat. This is because their basic computational units — quantum bits or “qubits” — are based on highly-sensitive units, some of them individual atoms, and heat can be a crucial interference factor.

Chaos gives the quantum world a temperature

Chaos gives the quantum world a temperature

Two seemingly different areas of physics are related in subtle ways: Quantum theory and thermodynamics. How can the laws of thermodynamics arise from the laws of quantum physics? This question has now been pursued with computer simulations, which showed that chaos plays a crucial role: Only where chaos prevails do the well-known rules of thermodynamics follow from quantum physics.

Long-range quantum key exchange with an untrusted satellite.

Long-range QKD without trusted nodes is not possible with current technology

The ARQ19 patent’s claim of achieving long-range quantum key distribution without trusted nodes is unfounded because it relies on an unexplained confidential classical channel between end users that cannot be quantum-based due to distance limitations, making the system’s security ultimately dependent on this non-quantum channel rather than achieving true quantum security.

Is Quantum Computing pharma’s next big disruptor?

Allie Nawrat talks to the Pistoia Alliance, QED-C and QuPharm about the opportunities Quantum Computing may provide to the pharma industry. In a future-casting 2030 vision report, life sciences membership organisation Pistoia Alliance examined technological opportunities […]

Hands-on lab skills key for Quantum jobs

Quantum physics courses need updating, according to researchers who interviewed representatives from 21 US companies that specialize in designing and building technologies for quantum applications. The interviews suggest that those graduating with bachelor’s degrees in […]

How many qubits for quantum supremacy?

This is a very interesting paper published by well-known people of the Quantum Community. Quantum computational supremacy arguments, which describe a way for a quantum computer to perform a task that cannot also be done […]

Machine Learning in the Quantum era

An interesting paper from Loïc Henriet, Quantum Engineer and Head of Software at Pasqal, Christophe Jurczak, General Partner at Quantonation and Leonard Wossnig, CEO of Rahko. The original article was published in Medium.com on November 13th, 2019. Machine Learning […]

McKinsey: Reviving innovation in Europe

McKinsey has just issued an interesting paper about innovation in Europe and propose five paths which could build on its strengths and help the continent regain its competitive edge. Some excerpts: Europe’s startup scene is thriving: […]

IBM: On “Quantum Supremacy”

A very interesting paper from IBM Quantum Computing Team as an answer to the famous leaked preprint of Google regarding quantum supremacy. Some excerpts: Recent advances in quantum computing have resulted in two 53-qubit processors: […]

Keep quantum computing global and open

The race to cash in is draining universities of talent, fracturing the field and closing off avenues of enquiry, warn Jacob D. Biamonte, Pavel Dorozhkin and Igor Zacharov. This article was originally published in Nature, […]