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Proposed approach to a large-scale quantum computer based on Schrödinger cat states
A cat qubit quantum computer is one proposed approach to a large-scale quantum computer based on Schrödinger cat states. Cat states are superpositions
Cat_qubit_quantum_computer
Computer hardware technology that uses quantum mechanics
of the two states, given by a probabilistic rule. If a quantum computer manipulates the qubit in a particular way, wave interference effects amplify the
Quantum_computing
Proposed quantum computer implementation
external motional states (for entanglement between qubits). The fundamental operations of a quantum computer have been demonstrated experimentally with the
Trapped-ion_quantum_computer
Process in quantum computing
any quantum superposition of this logical qubit with other qubits in the quantum computer, which would prevent it from being used to convey quantum information
Quantum_error_correction
building quantum computers". www.techtarget.com. Retrieved October 16, 2025. Thomson, Laura (May 23, 2024). "Cat Qubits Extend Resilience to Quantum Error
Timeline of quantum computing and communication
Timeline_of_quantum_computing_and_communication
junctions) Trapped ion quantum computer (qubit implemented by the internal state of trapped ions) Neutral atom quantum computer (qubit implemented by internal
List of proposed quantum registers
List_of_proposed_quantum_registers
Principle of quantum mechanics
equation governing that system. An example is a qubit used in quantum information processing. A qubit state is most generally a superposition of the basis
Quantum_superposition
Quantum state, of opposed conditions
In quantum mechanics, the cat state, named after Schrödinger's cat, refers to a quantum state. Generalizing Erwin Schrödinger's thought experiment, a cat
Cat_state
terms of quantum physics. While the fundamental unit of classical information is the bit, the basic unit of quantum information is the qubit. Quantum sensing
List of companies involved in quantum computing, communication or sensing
List_of_companies_involved_in_quantum_computing,_communication_or_sensing
Research division of Google
in building Google's proprietary quantum computer. In 2019, Google claimed "quantum supremacy". Using their 53-qubit Sycamore processor, they claimed
Google_Quantum_AI
Quantum computing company
Bob is a quantum computing company based in Paris and Boston. The company is known for its cat qubit quantum architecture and its work in quantum error correction
Alice_&_Bob_(company)
Quantum mechanics thought experiment
Schrödinger's cat thought experiment from the cat's point of view. Quantum immortality refers to the subjective experience of surviving quantum suicide. It
Quantum suicide and immortality
Quantum_suicide_and_immortality
Quantum error correcting code
(GKP) code is a quantum error correcting code that encodes logical qubits into the continuous degrees of freedom of a quantum system. It is named
Gottesman–Kitaev–Preskill code
Gottesman–Kitaev–Preskill_code
Cryptography based on quantum mechanical phenomena
Q quantum bits (qubits). Since even a dishonest party cannot store all that information (the quantum memory of the adversary is limited to Q qubits),
Quantum_cryptography
Quantum mechanical macroscopic object
resonator, similar to a tiny springboard, and a qubit, a device that can be in a superposition of two quantum states at the same time. They were able to make
Quantum_machine
Quantum measurement phenomenon
one quantum state to another. It can be a transition from the subspace without decoherent loss of a qubit to a state with a qubit lost in a quantum computer
Quantum_Zeno_effect
Interaction of a quantum system with a classical observer
finite-dimensional Hilbert space is a qubit, a quantum system whose Hilbert space is 2-dimensional. A pure state for a qubit can be written as a linear combination
Measurement in quantum mechanics
Measurement_in_quantum_mechanics
Quantum physics of light and matter in a cavity
under conditions where the quantum nature of photons is significant. It could in principle be used to construct a quantum computer. The case of a single 2-level
Cavity quantum electrodynamics
Cavity_quantum_electrodynamics
Encoding an n-bit string in m qubits
x_{n}\in \{0,1\}^{n}} , are encoded into a quantum state ρ x {\displaystyle \rho _{x}} of m {\displaystyle m} qubits. The goal is to retrieve any bit x i {\displaystyle
Quantum_random_access_code
Quantum computing applied to natural language processing
parameterised quantum circuits that can solve NLP tasks faster than any classical computer. It is inspired by categorical quantum mechanics and the DisCoCat framework
Quantum natural language processing
Quantum_natural_language_processing
Unit of information in a quantum computer
states is a qubit. Qudits with d states greater than 2 can provide a larger Hilbert space, providing more ways to store and process quantum information
Qudit
Quantum mechanics thought experiment
convenient way with the quantum circuit model. Assume that a box which potentially contains a bomb is defined to operate on a single probe qubit in the following
Elitzur–Vaidman_bomb_tester
Quantum mechanics posed in terms of category theory
Categorical quantum mechanics is the study of quantum foundations and quantum information using paradigms from mathematics and computer science, notably
Categorical_quantum_mechanics
Indian-American computer scientist (born 1961)
Your Browser". Hackaday. Retrieved 2019-01-22. "Cats, Qubits, and Teleportation: The Spooky World of Quantum Computation Applications (Part 3)". InfoQ. Retrieved
Lov_Grover
Interpretation of quantum mechanics
philosophy of physics, QBism (pronounced "cubism") is an interpretation of quantum mechanics that takes an agent's actions and experiences as the central
QBism
Formulation of quantum mechanics
Quantum Trajectory Theory (QTT) is a formulation of quantum mechanics used for simulating open quantum systems, quantum dissipation and single quantum
Quantum_Trajectory_Theory
Interpretation of quantum mechanics
This should not be confused with the idea of a qubit from quantum information theory, because a qubit can be in a superposition of values, whilst the
Relational_quantum_mechanics
Method of inferring the results of a computation without running a quantum computer
Counterfactual quantum computation is a method of inferring the result of a computation without actually running a quantum computer otherwise capable of
Counterfactual quantum computation
Counterfactual_quantum_computation
Techniques to maintain quantum coherence
I. (2003-10-07). "Speed Optimized Two-Qubit Gates with Laser Coherent Control Techniques for Ion Trap Quantum Computing". Physical Review Letters. 91
Coherent_control
Indian physicist
from information. Their project was entitled, "It from Qubit: Simons Collaboration on Quantum Fields, Gravity, and Information". In 2019, the American
Vijay_Balasubramanian
world's first handheld computer – Psion PLC First experimental quantum algorithm demonstrated on a working 2-qubit NMR quantum computer used to solve Deutsch's
List of British innovations and discoveries
List_of_British_innovations_and_discoveries
The timeline of quantum mechanics is a list of key events in the history of quantum mechanics, quantum field theories and quantum chemistry. The initiation
Timeline_of_quantum_mechanics
Graphical representation of a morphism
two qubits Y and Z in an entangled state and Alice performs a (post-selected) entangled measurement between Y and another qubit X, then this qubit X will
String_diagram
American businessman
algorithm to compile on quantum computers (both AQC and NISQ). Develop novel hybrid quantum-classical algorithms and quantum-inspired classical Graver
Sridhar_Tayur
Spanish theoretical physicist, author, and academic
number of qubits of the register. They showed the construction of the Prime state using the Gover algorithm that combined with the quantum counting algorithm
Germán_Sierra
Journal
does not fall up Fusion energy breakthrough 2024: "Quantum error correction with 48 logical qubits; and independently, below the surface code threshold"
Physics_World
Metal-organic compound
advantageous for quantum computing applications. A large amount of independent spins compared to a singular spin, permits the creation of a larger qubit and therefore
Single-molecule_magnet
Google division dedicated to AI
easier for new artists to enter the industry. Sycamore: a 54-qubit programmable quantum processor. LaMDA: a family of conversational neural language models
Google_AI
represents progress in its long-running project to create a quantum computer based on topological qubits. 24 February NASA formally announces that asteroid 2024
2025_in_science
Linear error correcting code
been proposed as a means of correcting errors in quantum computers, as they require few additional qubits to correct errors, as demonstrated by Gottesman
Low-density_parity-check_code
Australian chemist
design of high-temperature single molecule magnets, molecular spin qubits for quantum information science, methods and tools for modelling magnetic calculations
Nicholas_F._Chilton
code-named "Horse Ridge" – for control of multiple quantum bits (qubits) and scaling of larger quantum computer systems. Researchers develop a self-cleaning
2019_in_science
contrast imaging Charge density Charge invariance Charge ordering Charge qubit Charge radius Charge transfer insulators Charged black hole Charged current
Index_of_physics_articles_(C)
foetus. 2015 – Quantum Logic Gate – Engineers at the University of New South Wales successfully built a Quantum Logic Gate using two qubits into silicon
Timeline of Australian inventions
Timeline_of_Australian_inventions
U.S. Navy research laboratory
L. (3 April 2014). "Excitation spectrum as a resource for efficient two-qubit entangling gates". Physical Review B. 89 (15) 155404. arXiv:1312.6866. Bibcode:2014PhRvB
United States Naval Research Laboratory
United_States_Naval_Research_Laboratory
000+ qubit quantum computer". arstechnica. 24 October 2023. Retrieved 25 October 2023. "Atom Computing Announces Record-Breaking 1,225-Qubit Quantum Computer"
2023_in_science
September 2020. Google AI Quantum Collaborators (28 August 2020). "Hartree–Fock on a superconducting qubit quantum computer". Science. 369 (6507): 1084–1089
2020_in_science
13 August 2025. https://techcrunch.com/2025/07/16/india-eyes-global-quantum-computer-push-and-qpiai-is-its-chosen-vehicle/ "'Remote Technical Activation'
List_of_megaprojects_in_India
Overview of the events of 2020 in science
September 2020. Google AI Quantum Collaborators (28 August 2020). "Hartree–Fock on a superconducting qubit quantum computer". Science. 369 (6507): 1084–1089
July–September 2020 in science
July–September_2020_in_science
High-energy particle, mainly originating outside the Solar System
coherence times of qubits if they are not shielded adequately which may be critical for realizing fault-tolerant superconducting quantum computers in the future
Cosmic_ray
they have created a working quantum computer out of diamond, using the diamond's natural impurities as superimposed qubits to perform calculations. Google
2012_in_science
Overview of the events of 2023 in science
sunshade) against global warming. The first direct transfer of qubits between quantum computer microchips is demonstrated, with a 99.999993% accuracy rate
January–March_2023_in_science
creation of "Bristlecone", the world's most advanced quantum computer chip, featuring 72 qubits. 8 March – Scientists report the first detection of natural
2018_in_science
Google is a computer software and a web search engine company that acquired, on average, more than one company per week in 2010 and 2011. The table below
List of mergers and acquisitions by Alphabet
List_of_mergers_and_acquisitions_by_Alphabet
entanglement methods, researchers have teleported approximately 10,000 qubits (quantum bits) per second on a specially designed chip. 21 August – The lowest
2013_in_science
November 2022. Retrieved 10 November 2022. "IBM unveils its 433 qubit Osprey quantum computer". Tech Crunch. 9 November 2022. Retrieved 10 November 2022.
2022_in_science
and Vertic XL (tail-sitter drone with 4 rotors for mapping/surveillance), Qubit (educational quadcopter for early robotic learning) made by AMX UAV, a drone
List of unmanned aerial vehicles
List_of_unmanned_aerial_vehicles
Amazon Exclusive Marvel Legends
version Redeco of the Walgreens-exclusive Silver Surfer 2021 Nova (Richard Rider) and Qubit Alternate hands and flight stand for Qubit Classic version
List of Marvel Legends exclusive action figures
List_of_Marvel_Legends_exclusive_action_figures
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