How deeply does Real-World Cryptography cover quantum bit?

Defines superposition, probabilistic measurement, gates, and entanglement, but stops short of implementation details.

Quantum bit

A quantum bit is a quantum information unit that can occupy a superposition of the binary states 0 and 1.

A quantum bit, or qubit, is a quantum information unit that can occupy a superposition of 0 and 1. Measurement collapses it to one observed value, with each state having a 50% chance in the described example. section 14.1.1

A qubit participates in computation through a short sequence:

Quantum gates transform qubits, setting specific values or creating superposition and entanglement. section 14.1.2
Measurement converts the computed quantum state into classical 0s and 1s. section 14.1.2
A classical computer can further process the measured result to complete a useful computation. section 14.1.2

From electron spin to quantum circuits

An electron’s spin can be measured as up or down; in superposition, it occupies both possibilities until measurement. Quantum computers use analogous qubit behavior, including a demonstrated 53-qubit system and cloud services such as IBM Quantum. section 14.1.1 section 14.1.2

How Real-World Cryptography covers it

liveBook manning.com

Read Real-World Cryptography on liveBook Get the book at manning.com

Also explained in

liveBook manning.com

Building Quantum Software with PythonA qubit, or quantum bit, is the fundamental unit of quantum information and can exist in a superposition of two computational-basis states.

Compare how 2 books explain quantum bit →

Related concepts

ancillary qubitincludes · An ancillary qubit is an additional qubit used to store intermediate information or enable operations during a quantum computation.
quantum computerused by · A quantum computer is a computing device that processes information using quantum-mechanical states and operations.
precisionproduces · Precision is the proportion of items identified as positive, selected, or retrieved that satisfy the relevant correctness or relevance criterion.
quantum systemused by · A quantum system is a physical system whose states and dynamics are described by quantum mechanics, including quantum evolution and measurement.
binary stringused by · A binary string is a finite, ordered sequence of binary digits, each having the value zero or one.
quantum circuitpart of · A quantum circuit is an ordered arrangement of quantum gates, measurements, and related operations that specifies a computation on qubits.

This explainer was generated by Manning's knowledge graph from the text of Real-World Cryptography. The section links point to the parts of the book it draws on.