On cloud-based quantum computing

Cloud-based quantum computing is the invocation of quantum emulators, simulators or processors through the cloud. Increasingly, cloud services are being looked on as the method for providing access to quantum processing. Cloud-based quantum computing can be used in several contexts, such as: Teaching: teachers can use cloud-based quantum computing to help their students better understand[…]

On photonic quantum computing

The worldwide quest to build practical quantum computers is undergoing a critical period. Fault-tolerant quantum computers will soon provide significant computational speedups for problems like factoring, search, or linear algebra, etc. During the next few years, a number of different quantum devices will become available to the public.  Over the past decade, a wide variety[…]

On topological quantum computers

We have been talking about quantum computing for a few weeks now. We have talked about its theoretical principles (quantum entanglement, no-cloning theorem, …) and its applications, especially in the contexts of cryptography and complexity. Yet, we haven’t talk much about practicalities. The outstanding problem with entangled superpositions of spinning electrons, polarized photons or most[…]

On quantum computing and cryptography

Cryptography is the cornerstone of secure communication. Broadly speaking, cryptography deals with creating and studying protocols that prevent third parties (public or adversaries) from reading messages. It is strongly tied to information security topics such as confidentiality, data integrity, identification, authentication or non-repudiation / proof. Today’s cryptography is heavily based on mathematics: cryptographic algorithms are[…]

Having fun with Bell states and Q#

In a previous post, we introduced the basic concepts of quantum computing, during which quantum entanglement, Bell states and usual quantum gates such as Hadamard’s or Pauli’s were quickly addressed. Today, we’re going to explore some of these concepts and start having fun with quantum programming to illustrate these ideas. Quantum entanglement Quantum entanglement is a[…]

On quantum computing

Quantum computing as made the headlines recently. At IBM’s inaugural Index Developer Conference held in San Francisco, the company showed off its latest prototype: a quantum computing rig housing 50 qubits, one of the most advanced machines currently in existence. Google Quantum AI Lab announced Bristlecone, its new quantum processor, at the annual American Physical[…]

On hidden realities (part 5)

This is our fifth part of a series of posts on (a few selected) hidden realities : many-worlds interpretation of quantum mechanics, multiverse linked to the space-time geometries and dynamics, higher dimensional multiverse, holographic multiverse and simulated multiverse. For the previous posts, please see: On hidden realities (part 1) – Many-worlds interpretation of quantum mechanics[…]

On hidden realities (part 4)

This is our fourth part of a series of posts on (a few selected) hidden realities : many-worlds interpretation of quantum mechanics, multiverse linked to the space-time geometries and dynamics, higher dimensional multiverse, holographic multiverse and simulated multiverse. For the previous posts, please see: On hidden realities (part 1) – Many-worlds interpretation of quantum mechanics On hidden[…]

On hidden realities (part 3)

This is our third part of a series of posts on (a few selected) hidden realities : many-worlds interpretation of quantum mechanics, multiverse linked to the space-time geometries and dynamics, higher dimensional multiverse, holographic multiverse and simulated multiverse. For the previous posts, please see: On hidden realities (part 1) – Many-worlds interpretation of quantum mechanics[…]

On hidden realities (part 2)

This is the second part of a series of posts on (a few selected) hidden realities : many-worlds interpretation of quantum mechanics, multiverse linked to the space-time geometries and dynamics, higher dimensional multiverse, holographic multiverse and simulated multiverse. For the previous posts, please see: On hidden realities (part 1) – Many-worlds interpretation of quantum mechanics Space-time[…]